Mariners Edge Cubs in Nail-Biter as DarkHorse Pick Squeaks Home

The Mariners survived a tense finish at T-Mobile Park, edging the Cubs 5-4 in a game that validated every concern about David Peterson's shaky form. Seattle's -120 line looked generous on paper, and it proved just enough as DarkHorse's pick scraped across the finish line with a one-run cushion. Peterson lived down to…