Mets second baseman Neil Walker (hamstring tear) went 1-for-3 in a rehab assignment with Triple-A Las Vegas on Saturday.
Walker could return when the Mets play the Padres in San Diego beginning on Monday, manager Terry Collins said earlier this week.
In Walker's absence, Asdrubal Cabrera has shifted to second base with Jose Reyes at shortstop. Cabrera is expected to get time at third base when Walker returns.
Walker has hit .270 with nine home runs and 33 RBI through 60 games in his second season in New York.
He is eligible for free agency after the season.