Ike Davis (ankle) back in boot

New York Mets first baseman Ike Davis will be placed back in a boot for three weeks after an MRI at the Hospital for Special Surgery in Manhattan on Tuesday revealed his injured left ankle is not healing.

Davis has not played since he awkwardly rolled the ankle May 10 at Colorado in a seemingly mild collision with third baseman David Wright near the mound while pursuing a popup. Manager Terry Collins called the latest diagnosis an "inverted sprain" in addition to a bone bruise. Davis is out indefinitely.

"The only baseball activities he can do, basically, is play catch, and he'll be able to swing," Collins said. "But he's not to do any running whatsoever for the next three weeks. There's still a hot spot where the bone bruise is. So we're going to pretty much shut him down from that type of activity."

Head trainer Ray Ramirez told Collins he had "never seen" this long a recovery time for an injury of this type, according to the manager.

"If you look at the replay, it was ugly," Collins said. "I mean, that ankle got in a bad position. And I'm sure that bone driving down on that side like that is more severe obviously than we first anticipated."

Davis had been working out at the team's complex in Port St. Lucie, Fla., since the injury. Collins said he will invite Davis to be around the major league team, though, given the latest setback to keep his spirits up.

Davis was hitting .302 with seven homers and 25 RBIs at the time he rolled the ankle.

Nick Evans started at first base Tuesday night, with Daniel Murphy moving from first to third and Justin Turner playing second.

It was Murphy's first start at third base this season, but Collins said he might stick with that alignment for a while -- depending on how Evans performs -- until Wright gets back. Collins noted that Murphy played more than 200 games at third in the minors and Turner has spent most of his professional career at second.

"We brought him up because he's got tremendous bat potential," Collins said about Evans. "Probably as much power as anybody on our club. So I wanted to get his bat in the lineup and see how he does."

Ruben Tejada filled in at shortstop again. Angel Pagan moved up to the leadoff spot, but Collins said he plans to keep the switch-hitter lower down once Reyes returns to provide some protection in the middle of the lineup.

Adam Rubin covers the Mets for ESPNNewYork.com. Information from The Associated Press was used in this report.