Iannetta has played in 21 games this season and has started four straight games for the Mariners and will sit Tuesday's game against the A's. Steve Clevenger will take his place behind the plate and bat eighth against Oakland starter Sonny Gray.
Avila was placed on the 15-day disabled list on April 24 because of a right hamstring injury. White Sox manager Robin Ventura said the catcher could be back ready for activation as early next week. Avila has seen action in 10 games this season.
12 new undrafted free agents being signed put the Lions at 92 players on the roster, two over the maximum at this point. Cave was just far enough to lose his roster spot to said new players. He could catch on somewhere else but he is really nothing but a third center on a team.