Complex sentence: In Stivetts' first start of the season on April 23, his pitched was observed to be "wild" while issuing six base on balls; he prevailed, however, and Boston won by the score of 11-7.
Split into simpler sentences: In Stivetts' first start of the season on April 23, his pitching was described as "wild", as he issued six bases on balls. He prevailed, however, and Boston won by the score of 11-7.