Tuesday, 1:42am: Jon Heyman of CBS Sports tweets that the Cubs and Yankees have also checked in on Escobar. Susan Slusser of the San Francisco Chronicle also recently confirmed that the A's are in ongoing discussions with the Marlins about Escobar.

Monday, 9:05pm: A's GM Billy Beane met with Marlins officials today, hears MLB.com's Jane Lee. However, Lee does not know if the meeting involved Escobar.

6:23pm: The Rays are pursuing Escobar and the A's could be in play, tweets Ken Rosenthal of FOX Sports.

5:58pm: The Marlins are "actively shopping" shortstop Yunel Escobar, tweets MLB.com's Joe Frisaro. The Marlins are in trade talks with at least two teams, tweets Clark Spencer of the Miami Herald. Escobar, acquired in last month's blockbuster trade/salary dump with the Blue Jays respresents one of the Marlins' bigger contracts at $5MM. The Marlins also acquired shortstop Adeiny Hechavarria in the trade, so Escobar has been penciled in as the team's third baseman.

The Marlins' highest-paid player, pitcher Ricky Nolasco, would prefer a trade, agent Matt Sosnick told ESPN's Jerry Crasnick. Neither Nolasco nor Sosnick has directly requested a trade, however, tweets Juan C. Rodriguez of the South Florida Sun-Sentinel. Nolasco, 30 in December, posted a 4.48 ERA, 5.9 K/9, 2.2 BB/9, 0.85 HR/9, and 46.6% groundball rate in 191 innings this year. He'll earn $11.5MM in 2013.