New York Mets

Murphy was being used as the team's primary first baseman with Ike Davis in the minors, but that experiment could be over. Lucas Duda will start at first Monday. Murphy will face Braves starter Tim Hudson. 

Murphy is hitting. 281/.321/.426 in 256 at-bats. 

"When it comes down to the time to make the decision, certainly I’m not sure salary is going to have anything to do with it," Collins said. "I think we’re going to take the five guys that we need to make sure are the best to go out there."

Marcum fell to 0-8 on the season with a 5.48 ERA in 10 appearances and eight starts. Marcum signed a one-year, $4 million contract before the 2013 season. He is next scheduled to start Wednesday at Atlanta. 

Gee has given up just three runs over his last three starts. In the last 21 innings, he has 26 strikeouts. Gee does have a few things going against him, though. He's dealing with some elbow tendinitis, and will be part of a six-man rotation while Zack Wheeler is up. Gee has given up home runs at a slightly higher rate than usual this season, but if that evens out, he could become a decent Fantasy asset. Gee's 3.85 xFIP shows what he's capaple of posting if he solves his home run trouble. 

On the season, Gee has a 4.84 ERA through 13 starts. 

Daniel Murphy was being used as the team's primary first baseman with Ike Davis in the minors, but Duda will take over Monday. The move could become permanent until Davis returns. The team had initially resisted using Duda at first, but it makes sense from a defensive standpoint. 

Duda is hitting .226/.337/.439 in 212 at-bats. 

Valdespin has received full-time playing time recently, but will get a rest Monday. He'll be replaced by Juan Lagares, who will hit leadoff. Valdespin is hitting .207/.264/.328 in 116 at-bats.  

Nieuwenhuis, who finished 1 for 3 with a walk, came into Sunday's game batting .077 (1 for 13) in six games (three starts) since his recall from Triple-A Las Vegas.

Buck is batting .205 (8 for 39) with two doubles and no RBI in 10 June games (nine starts). In fact, he hasn't homered in 16 games and has homered twice in his last 34 games after homering nine times in 23 April games.

Byrd has homered seven times in his last 15 games (12 starts) since May 29. He's batting .295 (13 for 44) with 12 RBI in that span. Byrd has produced a .497 slugging percentage through 52 games.

The 30-year-old exercised an out in his contract Friday and the Mets had 48 hours to promote or release him. He will pitch out of the bullpen.

The move has been speculated since Saturday, and it's looking more likely Atchison will join the major-league club. He's been sidelined since May 13 with an elbow injury. Atchison has a 4.50 ERA in 18 innings. 

Francisco hopes to begin pitching in rehab games next week. Collins did not give a timetable for Francisco's return. 

Niese fought off shaky command (walked four) Saturday to pitch into the sixth inning and showed the desire to continue despite a so-so afternoon.

"I didn’t want to come out," Niese said, , per the New York Post. "As any starter, you want to stay in there and get that last guy. It’s my fault for walking four guys. I tried to hide the ball [from manager Terry Collins]. It didn’t work."

Niese has a 1.93 ERA in his last five starts, but he's 1-2 in that stretch while the Mets have averaged 2.6 runs per game

"Jon Niese didn’t have his good stuff (Saturday). He battled through six innings and didn’t want to come out of the game. That’s what I want," Collins said.

The Mets are expected to sell some parts at the deadline, and Parnell would draw significant interest. But the team wants to hold on to the 28-year-old reliever. Parnell is under contract with the club through the 2015 season. 

In 28 2/3 innings this year, Parnell has a 2.83 ERA and a 2.19 FIP. He's saved nine games.

Hefner hasn't allowed more than one earned run in three straight starts, but he has two no-decisions and one loss in that span. Hefner has just one win through 14 appearances (13 starts).

Hefner is expected to be back in action Friday at Philadelphia. Hefner suffered a loss at Philadelphia April 10, allowing five runs on six hits (two home runs) and three walks in three innings.

Turner is dealing with an intercostal issue, which could require him to miss some time. Turner is hitting .266/.307/.330 in 94 at-bats.