SAN DIEGO (AP) — Star shortstop Fernando Tatis Jr. left Friday night’s game in the first inning with a partially dislocated left shoulder and his San Diego Padres lost 9-4 to the Colorado Rockies, who were led by Ryan McMahon’s grand slam and Jon Gray’s solid outing.

It was the third time the 22-year-old Tatis left a game this year due to a left shoulder injury. He was the NL's starting shortstop in the All-Star Game.

Tatis singled and advanced on Machado’s sharp grounder to third baseman McMahon, who came up with the ball but then had it pop out of his glove and roll behind him into short left-field. Tatis made a dash for third but shortstop Rodgers ran toward third, took the throw from McMahon and tagged out the sliding Tatis.

Tatis slid awkwardly over the bag and crumbled in pain a few feet away, bringing a hush over Petco Park. Padres Manager Jayce Tingler and a trainer helped Tatis off the field as he winced in pain, holding his left arm. The trainer was holding Tatis’ upper arm/shoulder.

Tatis suffered a partially dislocated left shoulder on a violent swing April 5 against San Francisco and went on the injured list. He reinjured the shoulder and left a game against Cincinnati on June 19, although he missed only one game. Tatis left a spring training game after hurting the shoulder while making a throw but was back two days later.

Tatis also missed eight games in mid-May after testing positive for COVID-19.

Gray (7-6) earned the win with a strong performance, allowing only two runs on four hits in seven innings while striking out four. Gray’s only blemish was a two-run homer by Manny Machado in the sixth.

Machado hit another two-run homer in the eighth inning off reliever Tyler Kinley and finished 3 for 4.

Colorado pounded rookie lefty Ryan Weathers (4-3), who surrendered eight runs and eight hits in four innings. Weathers gave up McMahon's grand slam in the first as well as two-run homers by Connor Joe and Brendan Rodgers, both in the fourth inning.

Colorado's Elias Diaz hit a solo shot off reliever Nabil Crismatt in the fifth inning to give Colorado a 9-0 lead.

Tatis came into the game batting .290 with an NL-best 31 home runs, 23 stolen bases, 78 runs scored and a .650 slugging percentage. His 70 RBIs are third in the NL.

Tatis is known for making spectacular plays at shortstop although he currently leads the majors with 20 errors. He became the first Padres player voted to start an All-Star Game since Tony Gwynn in 1999.

TRAINER’S ROOM

Rockies: RHP Yency Almonte (MLB COVID-19 and contact tracing protocols) threw a side session in preparation for a rehab assignment with Triple-A Albuquerque…. RHP Antonio Senzatela (MLB COVID-19 and contact tracing protocols) is expected back next week. Manager Bud Black said Senzatela will make a minor league rehab start in an Arizona Complex League game on Saturday, with the goal of throwing four innings and 60 pitches in preparation for a possible start next week. ... OF Yonathan Daza (MLB COVID-19 and contact tracing protocols) got four at-bats in an ACL game on Thursday and likely will get similar playing time over the next few days.

UP NEXT

Rockies: RHP Germán Márquez (8-8, 3.54) starts Saturday evening.

Padres: RHP Yu Darvish (7-5, 3.27) takes the mound in the third game of the series.