Callahan may have injured right knee last night; Avery was limping badly after game, as reported. No work on their availability for Isles on Wednesday. Practice is devoted to PP, or lack thereof.
Here's a bit about Baldwin from the Rangers release.
Baldwin, 21, skated in 32 games with the University of Alaska Anchorage Seawolves this season, registering one goal and nine assists for 10 points, along with 51 penalty minutes. He ranked second among team freshman in assists and tied for third in points. Baldwin ranked sixth on the team overall and third among team defensemen in assists, fourth among team defensemen in points, and fifth on the Seawolves in penalty minutes. He registered his first collegiate point in his second game with two assists on October 9 vs. Mercyhurst. Baldwin notched his first career NCAA goal, and posted a career-high three points (one goal and two assists) and plus-three rating on November 7 vs. Denver.