New York Rangers defenseman Adam Fox is heading to the injured reserve list due to an upper-body injury, according to multiple reports on Wednesday.

The New York Rangers began life without Adam Fox on Thursday. How long their No. 1 defenseman remains out with an upper-body injury, and what their makeup looks like and where they are in the standings when he returns are still the unknowns.

New York Rangers defenseman Adam Fox is going on injured reserve with an upper-body injury, a person with knowledge of the decision tells The Associated Press

While the New York Rangers routed the New York Islanders on Tuesday, they ended the night facing a potential long-term issue of replacing Adam Fox, one of the NHL's more productive defensemen.

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Depth on defense may now be an issue, but the fourth line had a great day at the office against the Islanders.

Mika Zibanejad ran the point for most of the time at Thursday's practice, though Artemi Panarin and Alexis Lafreniere rotated through at times.

Schneider notched an assist, two shots on goal, five hits, five blocked shots and a plus-2 rating in Tuesday's 5-1 win over the Islanders. Schneider ended a nine-game slump with the helper. He also saw a season-high 23:37 of ice time due to injuries -- Adam Fox (upper body) and K'Andre Miller (lower body) were forced from the game early.

Although Fox is expected to miss time, the Rangers believe the defenseman can be back for their stretch run ahead of the playoffs. Fox was injured during the third period of Tuesday's 5-1 win against the Islanders and did not return.

Two-thirds of the way through a rocky season, these six Rangers were headed to the sport’s biggest stage and were going to come back refreshed and buoyed by playing alongside their countries’ best. Or that was how it was supposed to look.

Adam Fox was the Rangers’ leader in ice time, averaging over 23 minutes per game, and he was the team’s second-leading scorer, with 48 points (43 assists) in 58 games. He ran the point on the top power play unit,