The best rookies in sports history, from "Big Three" to "Big Two," dispatch from Paris, "The Diff," photo finish, and more.

Based on PFN’s win probability model, which ran 10,000 simulations via the PFN Playoff Predictor, the Philadelphia Eagles have a 52.8% chance of defeating the Kansas City Chiefs. The Chiefs are aiming to become the first team in NFL history to win three straight Super Bowls.

Yahoo Sports AM is our daily newsletter that keeps you up to date on all things sports. Sign up here to get it every weekday morning. 🎾 Aussie semifinals: No. 1 Jannik Sinner beat No. 21 Ben Shelton in straight sets and No. 2 Alexander Zverev won in a walkover against No. 7 Novak Djokovic, who withdrew with a leg injury after losing the first set.

The American League is founded. The league plans for a 140-game schedule, set player rosters at 14 and recognizes the Players Protective Association, the players’ union.