The Cardinals improved to a majors-best 31-11 at home with their second successive win following a four-game losing streak. San Diego has lost five of seven.
Pham was called up from Triple-A Friday and starred in his third big league start. He hit his first homer, a two-run drive off Ian Kennedy (4-8) in the third. Pham doubled home Lynn in the fifth.
Lynn (6-4) gave up three hits and one unearned run in seven innings. He also doubled and singled for his first career multihit game and scored twice.
Lynn struck out eight and retired 11 in a row at one point. He has not lost in his last six starts.
Kevin Siegrist recorded his fourth save in six chances. Closer Trevor Rosenthal was unavailable after pitching in three successive games.
