In a strange coincidence, Bosio was watching every pitch. He's the Cubs' pitching coach now and didn't mention his no-no to Arrieta during the game.
The Red Sox and Mariners were playing at the Kingdome in Seattle in 1993, and Bosio said he wasn't feeling well before the game. He shortened his warmups in half. He also remembers every play and every pitch, all the way to the last out when Ernie Riles grounded out to shortstop Omar Vizquel, who threw to first baseman Tino Martinez.
"You think about the Red Sox and you think about their hitting over the years and their offensive abilities," Bosio said. "Even back then in '93, they had a bunch of guys who could swing it. It takes a lot of great plays for that to happen. Every pitch counts. It's extremely hard to do. There's a number of them, but it's very rare."
General manager Jed Hoyer pointed out to Bosio after Monday's game that he was the last to no-hit the Red Sox.
"I said, 'Well, we damn near saw one tonight,'" Bosio said. "But it was going to be a tough go against that lineup. Those guys are a tough team and the defending world champs."
Arrieta had total command of his pitches and didn't need any dramatic catches or plays behind him to preserve his no-hitter as long as it went.
"It requires a total team effort," Bosio said.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.