Following the retirement of partner Misty May-Treanor in 2012, Walsh teamed with April Ross. She went on to break the career record for most wins by a female professional volleyball player when she won the FIVB Grand Slam in Xiamen, China. The win gave Walsh the 113th title of her career, breaking the old mark set by May-Treanor. Walsh and Ross won 21–14, 17–21, 15–12 over the Brazilian pair of Taiana Lima and Talita Da Rocha Antunes. It was the Americans' third title in five events since joining forces.