NL East Notes: Wheeler, D’Arnaud, Simmons, Nolasco

The day after he was rocked for six earned runs in 1 2/3 innings, the Phillies placed lefty John Lannan on the DL with a strained quadriceps in his left knee.  There's no word yet on who will replace him in the rotation, but he could be out six-to-eight weeks.  Tonight, the fourth-place Phillies and Cole Hamels host Adam Wainwright and the first-place Cardinals.  Elsewhere in the NL East:

• "Let's just say if this continues, certainly we've gotta start visiting that here pretty soon," Mets manager Terry Collins told Mike Francesa of WFAN in regard to a question about quality reinforcements including top pitching prospect Zack Wheeler.  The Mets' rotation has struggled beyond Matt Harvey and Jon Niese.  GM Sandy Alderson was noncommittal, telling Kristie Ackert of the New York Daily News, "It was always a case that it would be Zack’s sufficiency and the major-league team’s need.  If those two things merge, the need and the performance converge, then it is a possibility.  That could happen sooner or it could happen later."  Ackert hears that people within the organization privately do not feel Wheeler is ready, plus the Mets would like to avoid the pitcher achieving Super Two status after the 2015 season (necessitating a promotion in mid-June or later).
• Meanwhile, another top Mets prospect won't be seeing Citi Field anytime soon.  Catcher Travis D'Arnaud, acquired from Toronto in the R.A. Dickey trade, fractured a bone in his left foot yesterday in a Triple-A game.
• The Nationals' depth is on display, explains James Wagner of the Washington Post, with Kurt Suzuki seamlessly taking over as the starting catcher after Wilson Ramos suffered a hamstring injury.     
• Braves shortstop Andrelton Simmons is now represented by SFX, MLBTR has learned.  He'd previously been with The Sparta Group, up until the August switch.  A few new additions to our agency database include Jonathan Gray (advised by Jay Franklin of BBI Sports Group), Oswaldo Arcia (Martin Arburua), and Tony Cingrani (Curtis Dishman).
• "He's decent for a club that needs a starter. There are worse No. 5 starters in the big leagues right now, but he's not the pitcher he used to be," a scout told Jon Heyman of CBS Sports in reference to the Marlins' Ricky Nolasco.  Nolasco, Miami's highest-paid player by a long-shot at $11.5MM, is a strong candidate to be traded this summer.