August 21 in Tampa Bay baseball:
- Designated hitter Luke Scott was activated from the 15-day disabled list at Tampa Bay.
- Infielder Sean Rodriguez was optioned to Triple-A Durham.
- Outfielder Christopher Murrill was placed on the 7-day disabled list at Advanced-A Charlotte.
- "Dominican Summer League Transactions: August 2011". MiLB.com. Minor League Baseball. http://www.milb.com/milb/stats/stats.jsp?t=l_trn&lid=130&ymd=201108. Retrieved October 11, 2012.
- Vaughn, Rick; Costello, Chris; Molina, Carmen et al., eds (2007). Tampa Bay Devil Rays 2007 Media Guide. St. Petersburg, FL: Rays Communications Department. p. 265.
- "Transactions: August 2012". RaysBaseball.com. MLB Advance Media. http://tampabay.rays.mlb.com/team/transactions.jsp?c_id=tb#month=8&year=2012&team_id=139. Retrieved October 10, 2012.
- "Florida State League Transactions: August 2012". MiLB.com. Minor League Baseball. http://www.milb.com/milb/stats/stats.jsp?t=l_trn&lid=123&sid=l123&ymd=201208. Retrieved October 11, 2012.