At 2 p.m. ET on Saturday, outfielder Bryce Harper was in the starting lineup, hitting leadoff for the Nationals. By 5 p.m., however, Harper was scratched from the lineup because of a left triceps injury, which occurred when he was hit by a Luis Avilan pitch on Friday night.

Tension filled the air at Turner Field between the Nationals and Braves on Saturday night. Before anyone knew it, right-hander Stephen Strasburg and manager Davey Johnson were ejected from the game long before the Nationals defeated the Braves, 8-7, in 15 innings. The game was tied at 7 in the 15th, when Adam LaRoche led off the inning and hit a 1-2 pitch over the right-field wall for his 18th home run.

Josh Hamilton delivered a walk-off home run with one out in the 10th inning to give the Angels a 6-5 victory over the Astros on Saturday night at Angel Stadium.

On Saturday night, Ubaldo Jimenez became the living definition of “effectively wild” while leading the Indians to a 7-1 victory over the A’s at the Coliseum. There was no shortage of traffic on the bases, but Jimenez simultaneously flirted with danger and history, carrying a no-hitter into the sixth.

The Santa Clara Stogies played the Bay Area Bootleggers on Saturday in Santa Clara, Calif., in the Vintage Baseball World Series, a game full of former Major Leaguers and run by non-profit organization that runs its two weekend series each year based entirely on baseball rules from 1886.

Travis d’Arnaud arrived in San Diego on Saturday to make his long-awaited big league debut. The Mets’ top offensive prospect and one of their brightest hopes for the future, d’Arnaud slipped on his No. 15 jersey and batted sixth at Petco Park.

Nick Hundley hit a two-run home run in his first game since becoming a father to lead the San Diego Padres to an 8-2 victory over the New York Mets in the third of a four-game series at Petco Park on Saturday night.

Martin Perez left the mound to a standing ovation, raising his glove to acknowledge the 44,247 fans at Rangers Ballpark that watched the Rangers defeat the Mariners, 15-3, on Saturday night. But Perez didn’t just beat Seattle, he dethroned King Felix, his idol and fellow Venezuelan Felix Hernandez, for at least one night.

Clayton Kershaw picked up on Saturday night where Zack Greinke left off on Friday, and the Dodgers shut out the Phillies again, 5-0, for the lefty’s first career win over Philadelphia.

The crowd of 41,850 at Comerica Park was expecting fireworks after the game on Saturday night. Miguel Cabrera provided them a little early with a walk-off home run into the right-field seats to give the Tigers a 6-5 win against the Royals.

The Dodgers won yet again on Saturday, this time behind eight strong innings from Clayton Kershaw, blanking the Phillies, 5-0. The victory puts the Dodgers in elite company. They are 42-8 since June 22, matching the 1941 Yankees and 1942 Cardinals for the best 50-game stretch since 1900.

A Baltimore offense that’s been frustratingly erratic finally broke out on Saturday, with a season-high seven-run third inning that fueled an 8-4 series-evening win over Colorado to snap a four-game losing streak.

Left-hander Chris Sale hit a rough patch during a three-run third inning, but the White Sox ace settled in and Dayan Viciedo hit a three-run, game-changing homer in the fourth on the way to an 8-5 victory over the Twins on Saturday night at Target Field.

Another stellar outing from a resurgent Matt Cain and one split-second decision made by Marlins first baseman Logan Morrison changed the Giants’ fortunes in a 6-4 win on Saturday night in front of 24,653 at Marlins Park.

Blue Jays left hander J.A. Happ made a triumphant return to the Tropicana Field mound — where more than three months ago he was felled by a line drive to the head — riding two home runs by Adam Lind and one by Jose Bautista to a 6-2 victory over the Tampa Bay Rays on Saturday night.

Dusty Baker remains firmly convinced that for the 2013 Cincinnati Reds, the best baseball is still ahead. The Reds could continue to play at their current pace and qualify for the postseason. But to win the division, they’re going to have to pick up that pace.

Roy Halladay threw a bullpen session on Saturday to follow up Thursday’s rehab start with the GCL Phillies, and pitching coach Rich Dubee deemed both outings “fine.”