May-Treanor and Walsh were the 2007 Crocs Cup champions after winning 13 of 15 AVP tournaments last season.
Elaine Youngs and Nicole Branaugh, currently second, face stiff competition from April Ross, a 2000 graduate of Newport Harbor, and Jennifer Boss who are in third place, as well as Tyra Turner and Laguna Beach High product Rachel Wacholder.
Ross and Boss are starting the season with a new coach, former indoor Olympian Angela Rock.
“Getting fit, getting strong, making sure we last the whole season injury free,” Boss said. “We just needed someone to really push us into this year, and that’s what we’ve been focusing on.”