PHOENIX - Bob Melvin and his friend and former bench coach Chip Hale managed mano-a-mano across the diamond on Friday. [...] they were on a spoof “Dating Game” type show on the local regional sports outlet, answering questions about each other. Hale then gave Melvin a ride to the ballpark, and in the event of future Dating Game-type questions, we all now know the answer to “Who’s a better driver?” “I’m a way worse driver than he is,” Melvin said. In the dugout which man knows the other better? While Melvin, of course, goes into the series in Arizona hoping to sweep three from Hale’s club, he is happy that his protégé has landed in such a good spot and that his young team is doing well. Hale said he’s enjoying working with general manager Stewart and chief baseball officer La Russa. Stew, I’m with most days and Tony is around to help me with lineups and other things if needed, but he’s never forced anything on me. First baseman Ike Davis had his torn left hip labrum repaired Thursday in Vail, Colo., by orthopedist Dr.