It might just be me but it seems like the first three weeks of the fantasy baseball season have flown by.  We enter Week 4 with some familiar faces still enjoying strong seasons while still finding themselves relatively under owned in the majority of standard leagues.  Let’s take a look at the top players who should be added to help your squad in Week 4.

Catcher

Welington Castillo, ARI - Castillo finds himself owned in just over 30 percent of standard leagues which is very surprising given his strong 2015 campaign but nonetheless there are some leagues where he is still floating around the wire.  Over the last seven days, Castillo has not just been the best catcher in fantasy but he ranks among the top players overall as he hit .381 with six runs, five home runs, nine RBI, one stolen base and an OPS of 1.535.  He added onto those impressive numbers on Monday night when he went 3-for-5 with two RBI and two runs scored to give him 10 runs, six home runs and 12 RBI on the season.  If for some reason Castillo is still available in your league he should be your No. 1 add.

Yasmani Grandal, LAD - Like Castillo, Grandal still finds himself at just about 30 percent in most standard leagues which again is surprising given his offensive upside.  On the season Grandal is hitting .276 with two runs, four RBI and an OPS of .846.  In 2015 Grandal hit .234 with 43 runs, 16 home runs and 47 RBI over 355 at-bats and with better health he should be in line to play in the majority of games outside of Clayton Kershaw’s starts where A.J. Ellis is his personal catcher.  The Dodgers hit Grandal in the middle of the lineup which should provide him with plenty of RBI opportunities and with better health he has enough power to approach the 20-home run plateau. 

Cameron Rupp, PHI - Rupp is just over 1 percent owned in most standard leagues which means outside of deep two catcher leagues he should still be on the waiver wire.  With catcher being a relative offensive drain in most cases it should be noted that Rupp is hitting .286 with five runs, one home run, two RBI and one stolen base on the season.  He finds himself in a platoon with Carlos Ruiz but when he gets the opportunity to play he makes the most of it.  Over the last week Rupp is hitting .333 with three runs, one RBI, one stolen base and an OPS of .908.  He will play just about every other day for the Phillies and is a strong hitter against lefties so fantasy owners should consider his matchups to maximize his output.

First Base

Chris Carter, MIL - Chris Carter is enjoying the National League as the powerful first baseman is hitting .295 with 11 runs, five home runs, 15 RBI and an OPS of 1.050.  Over the last week Carter has been even better, hitting .333 with six runs, two home runs, seven RBI and an OPS of 1.149.  Fantasy owners know that Carter is certainly capable of filling up the counting stats but as a career .220 hitter a regression is certainly likely.  Carter is currently unowned in just under 40 percent of standard leagues so if you find yourself looking for a change at first base or need some power you should look no further than Brewers cleanup hitter.

Wil Myers, SD - So this is what a healthy Wil Myers looks like huh?  After a strong debut with the Rays, Myers struggled with injuries and inconsistent play which eventually saw him shipped to the Padres where he again dealt with an injury plagued 2015.  Over the last week Myers is hitting .375 with four runs, two home runs, six RBI, one stolen base and an OPS of 1.074.  Myers has dual eligibility in most leagues at first base and the outfield which only adds to his fantasy value.  Seeing as he is owned in just under 70 percent of standard leagues if you find him on your waiver wire he is certainly worth the grab given his potential.

John Jaso, PIT - Jaso keeps on hitting and therefore he keeps on finding himself in the Waiver Flavor article.  Over the past seven days he’s hitting .313 with one run, two RBI and an OPS of .790.  On the season Jaso is hitting a robust .344 with an OPS of .872.  Still owned in just over 20 percent of fantasy leagues, those who are looking for a solid bat who is hitting in a productive spot of the Pirates lineup and has little issues against righties should look to add Jaso to their roster.

Second Base

Logan Forsythe, TB - Forsythe is owned in just under 70 percent of standard leagues but after his Week 3 performance where he hit .440 with seven runs, one home run, four RBI two stolen bases and an OPS of 1.277 that number will likely be on the rise. Forsythe should have both first and second base eligibility in most leagues which will only add to his fantasy value given how shallow each position is.  2015 was a breakout season for Forsythe which saw him hit .281 with 69 runs, 17 home runs, 68 RBI and nine stolen bases and he finds himself one pace for another career year.

Jedd Gyorko, STL - Gyorko really took it to his former team last week as he went 6-for-11 with three runs, two home runs and four RBI against the Padres over the weekend.  That production was enough to carry his week as he finds himself platooning at second base.  The power with Gyorko is ever present and on the year he has already homered four times despite his playing time.  As long as he stays hot and Kolten Wong struggles, the Cardinals should continue to give him at-bats.  Gyorko is owned in just 3 percent of standard leagues so he should definitely be floating around the waiver wire in your league and given his power potential at the second base position in a lineup that is scoring plenty of runs he is worth the add.

Chase Utley, LAD - Utley is enjoying a strong start to his 2016 season as he hits leadoff for the Dodgers.  On the year he’s hitting .319 with 10 runs, five RBI, one stolen base and an OPS of .837.  Utley will hit leadoff against righties and given who hits behind him in the batting order he should score plenty of runs.  Utley hit .345 with five runs, two RBI, one stolen base and an OPS .884 last week for his fantasy owners but he still finds himself owned in just 14 percent of standard leagues. 

Third Base

Jake Lamb, ARI - The Diamondbacks have moved Lamb into the No. 2 spot in the batting order against righties which led to a boost in production over the past few weeks, as he finds himself hitting in front of Paul Goldschmidt and behind Jean Segura who is on pace for a career year.  These two factors should give Lamb plenty of chances to both drive in and score runs.  Lamb was off to a strong start in 2015 before injuries derailed his season but he’s healthy and off to another strong start, hitting .281 with eight runs, two home runs, 10 RBI, two stolen bases and an OPS of .889 to open the year.  Lamb is owned in just under 30 percent of standard leagues and is certainly worth a look given the shallowness of the position.

Nick Castellanos, Det - Castellanos has been a mainstay on this list as he finds himself owned in just over 50 percent of standard leagues despite hitting .339 with eight runs, two home runs, 10 RBI, one stolen base and an OPS of .836.  The Tigers offense figures to score plenty of runs this season and the 24-year-old Castellanos is hitting sixth in the batting order which should in turn provide him with plenty of RBI opportunities.   Castellanos was once a top prospect in the Tigers organization and after a few solid years which included a strong finish to 2015 he finds himself on pace for a career year.

Brett Lawrie, CWS- The White Sox offense had really slumped to begin the season but Lawrie was not the reason as he has collected hits in all but four games this season leading to a .278 average with nine runs, one home run, seven RBI and one stolen base.  This is Lawrie’s first season in Chicago after spending last year in Oakland where he set career highs in home runs (16) and RBI (60) while hitting .260.  The White Sox have a much better lineup than what Oakland was putting on the field last season and that fact should allow Lawrie to approach new career highs in 2016 as long as he stays healthy.

Shortstop

Aledmys Diaz, STL - Diaz is currently owned in just under 60 percent of leagues which is stunning seeing as he is hitting a league-best .481 with 14 runs, three home runs, 11 RBI, one stolen base and an OPS of 1.342 to open the season.  Over the last week he has been incredible, hitting .632 with three runs, one home run, three RBI, one stolen base and an OPS of 1.545.  The Cardinals continue to have Diaz hit at the bottom of the lineup but that has done little to hinder his production and though he is holding down the shortstop job while Jhonny Peralta is on the DL, there is no way manager Mike Matheny doesn’t find a way to keep him in the lineup once he returns given his production.

Eduardo Nunez, MIN - Nunez has been a spark plug for the Twins offense, having hit .280 with four runs, six RBI and a stolen base over the last seven days.  His seasonal numbers are a bit more impressive as he is hitting .404 with nine runs, eight RBI, four stolen bases and an OPS of .942.  Nunez is owned in just over 10 percent of standard leagues but given that he is hitting at the top of the Twins lineup, he has the ability to swipe bases and hit for a decent average that number should begin to rise given the position scarcity.

Ian Desmond, TEX - Many have cut bait on Desmond after his incredibly poor start to his 2016 season but over the last seven days he has turned it all around, hitting .364 with seven runs, two home runs, five RBI and three stolen bases.  It was just a few seasons ago that Desmond was a 20/20 guy for the Nationals but an incredible poor 2015 season saw him let go and forced to sign a short term deal with the Rangers as well as switch positions.  While he may not be playing shortstop for Texas he still has shortstop eligibility in all fantasy formats which increases his fantasy value.  Desmond is owned in just over 70 percent of fantasy leagues so if you saw that he recently hit the wire you should grab him quickly.

Outfield

Odubel Herrera, PHI - Herrera turned in a fine rookie season in 2015, hitting .297 with 64 runs, eight home runs, 41 RBI and 16 stolen bases over 147 games.  He finds himself owned in just over 25 percent of fantasy leagues through three weeks but that ownership is quickly on the rise after he hit .368 with seven runs, one home run, three RBI and two stolen bases over the last seven days.  Herrera hits at the top of the Phillies lineup and provides fantasy owners with some decent pop and stolen base ability.  Given the skillset he brings to the table Herrera is certainly somebody worth rostering even if you aren’t much of a believer in the Phillies offense after Maikel Franco.

Yasmany Tomas, Ari - Tomas is on fire right now, hitting .315 with 14 runs, four home runs, seven RBI and an OPS of .984 over the past two weeks.  He finds his ownership sitting at just under 50 percent and on the rise.  The Diamondbacks have Tomas hitting behind Paul Goldschmidt in the lineup which should provide him with plenty of RBI opportunities.  Tomas also offers fantasy owner’s dual position eligibility which only adds to his fantasy value.

Ezequiel Carrera, Tor - Carrera is owned in just over 1 percent of fantasy leagues but he finds himself hitting atop the potent Blue Jays lineup over the last week where he has hit .474 with four runs, one home run, one RBI and two stolen bases.  Carrera’s ability to swipe bags while hitting leadoff for the Blue Jays should make him an appealing waiver claim this week just given his upside.  The Blue Jays lineup faces a few southpaws this week which is incredibly favorable for that lineup and as long as Carrera is hitting leadoff he should score plenty of runs.

Pitchers

Jason Hammel, CHC - Hammel saw one of the biggest jumps in ownership over the past week which has him owned in just under 70 percent of fantasy leagues.  Over the last week Hammel went 2-0 with a 0.75 ERA and a 0.83 WHIP while striking out 13 over 12.0 innings.  On the year he has been just as impressive, going 3-0 with a 0.75 ERA and a 1.04 WHIP while striking out 22 over 24.0 innings.  Hammel’s next start will come on Saturday against a punchless Braves lineup which should provide Hammel with plenty of strikeout opportunities.

Mat Latos, CWS - Whelp it appears that Matt Latos is finally healthy and the White Sox are the ones reaping the rewards.  Through his first four starts of the season he is 4-0 with a 0.74 ERA and a 0.82 WHIP while striking out 13 over 24.1 innings.  While his strikeout numbers are down from years past, fantasy owners cannot ignore his effectiveness out of the gate.  He finds himself owned in just under 70 percent of fantasy leagues and will draw a tough test on Friday when the White Sox travel into Baltimore.

Steven Wright, BOS - The Boston knuckleballer has been the best pitcher on the staff to begin the season, going 1-2 with a 1.40 ERA and a 1.24 WHIP while striking out 17 over 19.1 innings.  With all knuckleballers fantasy owners should understand that things can go bad quickly but when they are pitching well like Wright is currently they can be almost unhittable.  Wright’s next start will come on Wednesday against a Braves team that ranks among the league worst in most offensive categories. Wright finds himself owned in just under 8 percent of standard leagues and given his next matchup he’s worth the stream.

Steve Cishek, SEA - Cishek entered the season with some question marks regarding his ability to hold down the Mariners starting job after his disastrous 2015 season as the Marlins closer which saw him demoted and eventually traded to the Cardinals where he turned in a solid end to his year.  Fortunately for fantasy owners and the Mariners it appears as though Cishek is going to be just fine as he has notched five straight saves while going 1-1 with a 0.90 ERA and a 0.80 WHIP. Cishek is owned in just over 65 percent of standard leagues so if you find yourself in need of a more reliable closer I would grab this guy.

Ryan Madson, OAK - After using a committee to begin the season the A’s have settled on Madson as their closer going forward and he has not let them down, going 0-0 with seven saves and an ERA of 1.86.  Madson was out of major league baseball for four years due to arm troubles but returned last year with the Royals and was a dominant member of their bullpen.  Given his effectiveness last season and his history of closing games back in the early part of this decade the A’s should have plenty of confidence in Madson’s ability to keep this role.  He currently finds himself owned in just under 65 percent of fantasy leagues so those looking for help in the saves department should definitely pick him up.