The Detroit Tigers pulled off the biggest upset in MLB in the past 15 years. . Houston's Justin Verlander only allowed two hits, both home runs, in a complete game effort. . The Detroit Tigers closed at +435 underdogs at Caesars Sportsbook. . The Astros lost 8-7 to the Baltimore Orioles, who were +390 underdogs, 10 days ago. . Before these two upsets, the largest underdog to win was the 2007 Washington Nationals over the Minnesota Twins. . We took a couple of straight bets on the Astros and a slew of parlays over $500 that had either the Astros money line or run line on them, Jeff Davis, Caesars director of trading, via ESPN . Verlander retired the first 14 batters he faced before Ronny Rodriguez homered in the fifth inning. . Verlander retired another 10 straight batters before John Hicks homered to lead off the ninth inning. . That's the biggest win for us in a long, long time, especially against a premium team like that, a World Series contender and Verlander on the mound, Ron Gardenhire, Tigers manager, via statement.