What happened: ESPN's Buster Olney reports the Detroit Tigers are telling rival clubs they are not sellers as of now, with a sweep of the Tampa Bay Rays fueling their hope of climbing back into the AL race. In the same report, the Boston Red Sox are signaling to other teams that they are looking to add a right-handed bat. The chatter comes well ahead of the trade deadline as contenders and middle-of-the-pack clubs begin to define their direction.

Why it matters: Detroit's posture matters because a selling Tigers team would put significant trade pieces on the market; holding firm keeps the AL race tighter and changes the calculus for buyers. Boston's search for a right-handed bat points to a roster need the front office wants addressed, which could make the Red Sox active participants in deadline talks. How each team behaves shapes the broader market for available hitters and pitching.

What to watch: Watch whether Detroit's stance holds if the winning stretch cools, and which right-handed bats surface as Boston targets. Both signals will be tested as the deadline approaches.