Production kicked off in Los Angeles today.
Renowned tennis coach Brad Gilbert and wife Kim are serving as technical consultants.
Clockwise: Chloe Fineman, Patton Oswalt, Aaron Chen, Martin Kove, Chris Parnell, Christine Taylor and John McEnroeJustin Bettman/SamJones/Chris Loutfy/Courtesy/Kenneth Dolin/Courtesy/Getty
