Shohei Ohtani did not play in the Dodgers' 4-0 loss to the San Diego Padres on Sunday because of back tightness that forced him to exit a game Saturday night.

Los Angeles manager Dave Roberts said sitting Ohtani would be a precautionary measure.

The Chicago Cubs drew six bases-loaded walks in the fifth inning against the Pirates on Saturday, the most by a major league team in a single inning in 65 years.

The last team to draw that many free passes with runners at every base in one inning was the Chicago White Sox, who had eight in the seventh inning on April 22, 1959.

Paul Skenes' stuff was as electric as advertised.

A fastball that reached at least 100 mph 17 times. A slider that left major leaguers shaking their heads. An invention called a "splinker" that is a hybrid of a splitter and a sinker and dips and dives unlike any pitch anywhere in baseball.

Yet even at age 21, the Pittsburgh Pirates rookie knows all the "oohs" and "ahs" and knee buckles a ball that at times seems to explode out of his right hand can produce won't matter if he can't control it.

So while there were some positive takeaways from his major league debut Saturday -- seven strikeouts over four-plus innings and much, much later a 10-9 victory over the Chicago Cubs -- the top overall pick in last year's draft understands there is more work to be done.

Luis Arraez had four hits and an RBI in his first game after being traded from the Miami Marlins, Ha-Seong Kim hit a three-run homer in San Diego's eight-run seventh inning and the Padres routed the Arizona Diamondbacks 13-1 on Saturday.

The Padres made a massive deal Friday, acquiring Arraez from the Marlins along with nearly $7.9 million in a trade for four players. The two-time batting champion didn't join his new team until about 3:30 p.m. Saturday, but wasted no time in producing, going 4 for 6 while scoring two runs.

"Clearly an amazing approach and I can see why he is the rightful moniker of 'The Sprinkler,'" Padres manager Micke Shildt said.