Walsh-Jennings plays professional beach volleyball on the U.S. AVP Tour and internationally on the FIVB World Tour. For most of her career she played with partner Misty May-Treanor, forming the most successful beach pairings in AVP history. May and Walsh formed a partnership on the beach circuit in 2001, finishing the season with the number five ranking in the world. In 2002 the team reached the number one ranking. They continued their dominance in 2003, winning all eight tournaments they entered and a then-record 90 straight matches, including the world championships where they upset defending world champions Brazil in the final.