ON DECK: ASTROS AT SAN DIEGO PADRES

When/where: Today and Saturday at 8:10 p.m., Sunday at 3:10 p.m.; Petco Park.

TV/radio: ATTSW today and Sunday, ATTSW Plus on Saturday, ESPN on Sunday; 790 AM today and Sunday, 740 AM today and Saturday, 850 AM (Spanish) today and Sunday, 101.7 FM (Spanish).

Pitchers: Today, RHP Lance McCullers Jr. (2-1, 5.47) vs. RHP Garrett Richards (1-1, 3.45); Saturday RHP Brandon Bielak (3-0, 1.69) vs. RHP Zach Davies (3-2, 3.25); Sunday, RHP Zack Greinke (1-0, 1.84) vs. TBD.

Astros (15-10) update: During its eight-game winning streak, Houston has outscored opponents 48-21. … Yuli Gurriel is batting .407 (11-for-27) during a seven-game hitting streak. … Kyle Tucker leads the majors with four triples after collecting three in the two games at Colorado. … Over his last three starts, Greinke has allowed one run in 201⁄3innings with 19 strikeouts and two walks.

Padres (15-12) update: The Padres enter Friday with a grand slam four consecutive games, the first team in major league history to accomplish the feat. Fernando Tatis Jr. (Monday), Wil Myers (Tuesday), Manny Machado (Wednesday) and Eric Hosmer (Thursday) did the honors during a four-game series against the Rangers. Only four teams had ever hit slams in three straight games, none in the National League since the 1895 Cleveland Spiders. … Tatis has blossomed into a superstar in his second MLB season. The 21-year-old shortstop entered Thursday’s play with a .311/.387/.717 slash line and led the majors in homers (12), RBIs (29), runs (25) and stolen bases (six, tied with five others). … Myers entered Thursday with a .945 OPS and 17 RBIs in 24 games.