As part of UCLA’s softball senior day festivities, the mothers of Megan Grant, Jordan Woolery and Taylor Tinsley threw out ceremonial first pitches to their respective daughters. Some were better than others. “I’ll say like a 6.5 out of 10,” Tinsley, the Bruins’ ace, quipped of her mother’s effort. “She just had to short-hop me.” UCLA softball players (from left) Jordan Woolery, Megan Grant and Taylor Tinsley celebrate senior day Sunday. UCLA Athletics/Mac Brown As far as a sendoff for one of the top departing classes in school history, UCLA notched a perfect score. All three seniors made major contributions during the No. 5 Bruins’ 11-3 five-inning, run-rule victory over No. 11 Oregon on Sunday at Easton Stadium. Tinsley (26-5) pitched 2 ⅓ scoreless innings of relief after struggling the previous two days, when the Ducks won the first two games in the series to snap UCLA’s 20-game home winning streak. Grant tallied two hits, including a double down the right field line.…