Hartsock sidelined Dan Leberfeld

Jets tight end Ben Hartsock was sidelined at Thursday’s OTA practice.

The journeyman hurt his hamstring last week in the OTA’s.

With Hartsock out of the lineup, Mathew Mulligan and Jeff Cumberland got a lot more reps.

Hartsock joined the Jets last September after being waived by Atlanta. Hartsock’s arrival was a boon to the Jets running game in 2009.. He’s a very good run blocker.