Yankees' Aaron Boone 'sticks' by struggling Gerrit Cole, Aroldis Chapman

Don't blame the Yankees' pitching issues on the banning of sticky substances. Manager Aaron Boone insisted Thursday there is no correlation — even as his two most dominant pitchers have struggled mightily since a June 3 memo was sent out notifying teams that MLB would soon be enforcing its rules that prohibit the use of foreign substances. Enforcement began on June 21, with umpires checking pitchers after innings.