(PEOPLE) -- George Lopez may be in transition again -- his TBS talk show was canceled this week -- but he knows he can always count on one close friend in particular: Sandra Bullock. "If it wasn't for her involvement in me, or her belief in me, I would have had a very different last 10 years," Lopez, 50, told PEOPLE Wednesday at Dodger Stadium, where he threw out the first pitch to promote MasterCard's support of Stand Up 2 Cancer. Lopez didn't speak about TBS's decision -- "Lopez Tonight" will end its almost two-year run on Thursday -- but...
