 Complete the following phrase:  Christenson would bounce back and forth from the majors to the minors until 1975, when the Phillies called him up to stay. He went 116 that season and would become a key cog on Phillies teams that would win three straight NL Eastern Division titles 19761978. Christenson would have his best seasons those three years: 1976, going 138 with a 3.68 earned run average ERA; 1977 his best season, when he went 196 with a 4.06 ERA, winning 15 of his last 16 decisions; and 1978, where he slipped to 1314, despite posting a career-best ERA of 3.24. In the 