Last week, the Marlins agreed to a trade with the Padres that landed them starting pitchers Andrew Cashner and Colin Rea. Cashner had a good start on Sunday, helping the Marlins take down the Cardinals and gain a one-game lead in the race for the second NL Wild Card.

As for Rea, well, he left his first start with the club due to an elbow injury, giving us this response from Marlins owner Jeffrey Loria:

Loria's reaction to Rea's injury was priceless. USATSI

Well, there's a new development. The Padres announced Monday that Rea was traded back for right-handed pitcher Luis Castillo (he was in the original deal going from Miami to San Diego).

No further details are available at this point and there are very few precedents in place of this happening. However, if Rea told Marlins medical personnel that this issue pre-dated the trade, the Marlins would have a right to approach the league office. Instead, the trade was essentially re-worked with part of it walked back.

Rea, 26, is 5-5 with a 4.82 ERA, 1.42 WHIP and 80 strikeouts in 102 2/3 innings this season. He's currently on the disabled list with that elbow issue, so he's obviously not going anywhere but San Diego now.

Castillo, 23, is 7-3 with a 2.25 ERA, 0.97 WHIP and 84 strikeouts against 15 walks in 100 innings in Class A-Advanced this season.