<p>SAN DIEGO &mdash; Fernando Tatis Jr. homered twice, including a 447-foot grand slam, and drove in six runs for the San Diego Padres, who beat the Seattle Mariners 9-2 Sunday to sweep a nine-game homestand.</p>
<p>The 22-year-old superstar sent Petco Park into a frenzy on a sunny afternoon when he drove a 1-0 pitch from Robert Dugger to the base of the batter’s eye in straightaway center field with one out in the seventh.</p>
<p>Knowing it was gone, Tatis took a few steps and, holding his bat by the barrel, flipped it aside before starting his trot. </p>
<p>It was his 13th homer this season and his second career grand slam. The first, last Aug. 17 at Texas, launched “Slam Diego,” a streak of four grand slams by the Padres in four straight games, a first in baseball history.</p>
<p>Tatis also hit a 441-foot home run into Petco Park’s second deck leading off the second inning and singled in the go-ahead run during a three-run rally in the sixth. </p>
<p>Tatis has 11 hits, including four homers, and 12 RBIs in four games batting cleanup since returning from the COVID-19 injured list on Wednesday. </p>
<p>The Padres took three-game series against St. Louis, Colorado and Seattle. Overall, they have won 12 of 13 games. </p>
<p>Yu Darvish (5-1) pitched seven strong innings to win his second straight start, holding Seattle to one run and seven hits while striking out five and walking none. </p>
<p>Tatis put a charge into the crowd when he homered in the second off Justin Dunn. It was his 200th career hit.</p>
<p>Dunn got that run back when he hit an RBI double off Darvish for his first big league hit.</p>
<p>Tatis’ homer was the only hit allowed by Dunn in five innings. With the score tied at 1, Dunn made way for Anthony Misiewicz (2-3) starting the sixth, and the lefty promptly allowed four straight hits, including Tatis’ sharp RBI single.</p>
<p>After Eric Hosmer singled to right to load the bases, JT Chargois came on and allowed a sacrifice fly by Wil Myers, with Tatis having enough speed to advance to third. Tatis then scored on Victor Caratini’s groundout.</p>
<p>TRAINER’S ROOM</p>
<p>Mariners: Placed RHP Kendall Graveman on the injured list without giving a reason. To take his spot, RHP Wyatt Mills was recalled from Triple-A Tacoma.</p>
<p>Padres: Myers was activated after missing 10 games following a positive COVID-19 test that forced him to be removed from a game at Colorado on May 11. OF Brian O’Grady was optioned to Triple-A El Paso. … RHP Keone Kela, who had Tommy John surgery last week, was moved to the 60-day IL.</p>
<p>UP NEXT</p>
<p>Mariners: LHP Yusei Kikuchi (1-3, 4.32 ERA) is scheduled to start Monday night in the opener of a three-game series at Oakland. </p>
<p>Padres: Haven’t announced a starter for Monday night’s opener of a four-game series at Milwaukee.</p>
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