David Wright is expected to rejoin the team shortly, manager Terry Collins said Sunday.

"David has been simulating baseball activities," he said. "He's been doing some running, doing some light hitting. Hopefully [this week] he starts baseball activities."

Wright has played in only eight games this season. While rehabbing a hamstring injury in April, the third baseman reported back pain and was diagnosed with lumbar spinal stenosis. No doctors who have treated Wright -- who has been receiving therapy in California -- have commented on his prognosis, and doctors familiar with his condition seem divided on his ability to return without surgery.

General manager Sandy Alderson has maintained that doctors believe Wright can play again this season. Collins was asked how the lineup would be impacted if Wright cannot return to playing on a regular basis.

"Well, we have good enough pitching," he said. "Now, as you get down to the end of the season, you still got to score some runs. You kind of like the two new additions [Juan Uribe and Kelly Johnson]. It spreads our offense a little. And hopefully when Michael Cuddyer gets back, he'll be a better offensive player."

Injury updates

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Collins said Steven Matz (strained left lat) is "still in a period where he's not to throw," though he will be re-examined this week and "hopefully start a throwing program." . . . There is no timetable for Travis d'Arnaud (sprained elbow), who is on a rehab assignment in Binghamton.

Extra bases

The Mets are 34-16 at Citi Field, tying the 1986 and '88 teams for the best start in team history for 50 games . . . Jacob deGrom's RBI was the 20th for Mets pitchers, who lead the majors in that category . . . The Mets are off Monday before hosting the Padres for three games starting Tuesday. The Nationals follow, with Sunday's game rescheduled to be played at night.