The San Francisco 49ers claimed running back Israel Abanikanda off waivers from the New York Jets on Tuesday, one day after placing running backs Christian McCaffrey and Jordan Mason on injured reserve.The Jets released Abanikanda on Monday after adding Kene Nwangwu to the active roster. Nwagwu had been a practice-squad elevation for the Jets last Sunday against Seattle and returned a kickoff for a touchdown in the game.Abanikanda, 22, was a fifth-round draft pick by the Jets in 2023. After running 22 times for 70 yards and catching seven passes for 43 yards in six appearances as a rookie, Abanikanda did not play a regular-season game for New York in 2024, buried on the depth chart behind Breece Hall and others.When the Niners placed McCaffrey and Mason on IR, rookie Isaac Guerendo was left as the only healthy running back on their active roster.In Sunday night’s loss at the Buffalo Bills, McCaffrey left the field in pain in the second quarter and was diagnosed with a posterior cruciate ligament injury in his right knee. Mason also suffered a high ankle sprain in the game.