MESA, Ariz. – While Shohei Ohtani was authoring the greatest single-game performance in MLB history a state away, Walker Janek turned in one of the best offensive outings the Arizona Fall League has seen in the past decade.

Just over 24 hours after hammering a three-run homer, the Astros’ No. 4 prospect upped the ante by walloping a first-inning grand slam to set the tone en route to a seven-RBI performance during Scottsdale's 11-0 win over Mesa at Sloan Park on Friday night.

“I’ve just been seeing it well,” Janek said. “Got a good piece of it, didn’t miss it.”

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Janek hasn’t missed much of anything during his time in the Fall League. While it doesn't officially count, his 104.1 mph, 404-foot tater marks his first grand slam in pro ball. Through s

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