NL East Notes: McCann, Phillies, Oswalt, Mets

Here's the latest from around the NL East…

• Though the Braves and Brian McCann have agreed to put extension talks on hold until the end of the season, GM Frank Wren said the team won't rule out re-opening talks during the season, David O'Brien of the Atlanta Journal-Constitution reports.  McCann is entering his last contracted year with Atlanta.
• Over 19% of the Phillies' 2012 payroll was lost to time spent the disabled list, David Murphy of the Philadelphia Daily News observes.  Murphy notes that the Phils have lost over $100MM to injuries over the last five seasons, with approximately $64.5MM of that total coming from 2011 and 2012.
• We heard last week that the Mets were interested in Roy Oswalt, and the club "flirted with the idea" of using Oswalt as a late-game reliever and possible closer, Metsblog.com's Matthew Cerrone reports.  If the Mets are indeed looking for a veteran swingman, Cerrone suggests that Derek Lowe or Daisuke Matsuzaka could be possible fits.
• Shaun Marcum's Mets contract contains up to $4MM in incentive bonuses, which are outlined by the Associated Press (via ESPN New York's Adam Rubin).
• If Gio Gonzalez ends up facing a PED-related suspension, there aren't many optimal left-handed starting options left for the Nationals in free agency, MASNsports.com's Byron Kerr writes.  A Gonzalez suspension would put added pressure on Ross Detwiler as Washington's only current left-handed starter, and Kerr lists a few other internal options.  Earlier this offseason, the Nats non-tendered southpaw John Lannan, who signed with the Phillies.