Just as the Mets’ thrilling second half run has turned into a potential season-crushing swoon, Jed Lowrie is progressing toward a possible debut.

Sounds about right for the injury-prone veteran infielder and the team for which he was supposed to be such a big part.

Lowrie is still trying to get to Queens, even if it has taken him longer than anyone could’ve anticipated, as the Mets’ postseason play hopes fade amid a six-game home losing streak. Thursday night, the 35-year-old Lowrie took a big step in his latest comeback attempt, playing back-to-back games for the first time since he began his latest rehabilitation assignment on Aug. 20 with Single-A Port St. Lucie.

“He’s healthy, he’s feeling good at this point,” manager Mickey Callaway said before the Mets were swept by the Cubs, 4-1, at Citi Field to fall five games out of the second wild-card spot. “His at-bats have been competitive. He feels like he’s in a good spot, where he should be at this point in his rehab.”

Lowrie homered and drew a walk in five innings at second base Thursday night for Triple-A Syracuse, after playing five innings and going 1-for-3 for Syracuse on Wednesday. In six minor league games so far, he’s 5-for-18.

When exactly he will join the Mets is unclear. Callaway wouldn’t commit to him being brought back when the rosters expand Sunday. It has more to do with how Lowrie is feeling and if he believes he is ready to play at a major league level.

“We’re going to continue to lean on him,” Callaway said. “He’s a good baseball player, so he’s going to look impressive obviously when he’s playing in the minor leagues, no matter how he feels.”

Lowrie was an All-Star a year ago with the A’s for the first time in his mostly productive career, slashing .267/.353/.448 with a career-high 23 home runs and .801 OPS. He was expected to be a core part of the Mets this season, a versatile infielder capable of playing multiple positions, after signing a two-year, $20 million deal in the offseason.

But he suffered a sprained capsule in his left knee early in spring training that wasn’t initially believed to be serious. It was, however, sidelining him until late April when he began a rehab assignment. After eight rehab games, Lowrie was shut down with a strained left hamstring. That, and other ailments like a right calf injury, kept him shelved until recently.

When he eventually gets to Queens, barring another setback, it’s uncertain how Callaway will use Lowrie. The manager was hesitant to tip his hand, preferring to wait and see where the team stands at the time. At this rate, they’ll be playing out the string.

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