December 18 in Tampa Bay baseball:
- Pitchers Roger Bailey, Tim Davis, and Mark Hutton, infielder Aaron Holbert, and catcher Jesse Levis were signed to minor league contracts.
- Pitcher Roberto H. Hernández (formerly known as Fausto Carmona) was signed to a 1-year, Major League contract for $3.25MM plus incentives.
- Vaughn, Rick; Costello, Chris; Landy, Greg et al., eds (1999). Tampa Bay Devil Rays 1999 Information Guide. St. Petersburg, FL: Tampa Bay Devil Rays Public Relations Office. p. 281.
- "International League Transactions: December 2009". MiLB.com. Minor League Baseball. http://www.milb.com/milb/stats/stats.jsp?t=l_trn&sid=milb&lid=117&ymd=200912. Retrieved October 25, 2012.
- "Roster >> Transactions: December 2012". RaysBaseball.com. MLB Advance Media. http://tampabay.rays.mlb.com/team/transactions.jsp?c_id=tb#month=12&year=2012&team_id=139. Retrieved February 4, 2013.
- Topkin, Marc (December 28, 2012). "Hernandez deal is 1-year, $3.25M, plus incentives". The Heater. Tampa Bay Times. http://www.tampabay.com/blogs/rays/content/hernandez-deal-1-year-325m-plus-incentives. Retrieved February 4, 2013.