The US Open reaches its Semifinals stage in New York, and the remaining draw has delivered two intriguing contests. A ranking gap headline the top half, while a familiar American rivalry headlines the bottom half. Here is what the data tells us heading into Friday's action.

Alexander Zverev vs. Karen Khachanov - Semifinals

Scheduled for approximately 3:00 PM EDT.

Zverev leads the all-time head-to-head 6-3, giving him a clear historical edge over Khachanov. The most recent meetings paint a nuanced picture, however. Zverev took a tightly contested five-set match at the French Open in a Round 4 clash, showing resilience when pushed deep into a match. But Khachanov responded with consecutive straight-set victories, a 6-1, 6-2 win in Paris at the BNP Paribas Masters and a 6-3, 6-3 result in Montreal at the Coupe Rogers, suggesting Khachanov can dominate the matchup when conditions suit him. Zverev's most dominant result in the series was his 6-3, 6-1 Olympic final victory in Tokyo. The ranking gap, with Zverev at No. 3 and Khachanov at No. 15, favors the German, and his 6-3 overall record in the series provides a meaningful structural advantage. No odds are available to further calibrate expectations.

Prediction: Zverev advances in four sets.

Frances Tiafoe vs. Ben Shelton - Semifinals

Scheduled for approximately 7:10 PM EDT.

Shelton holds a commanding 3-1 head-to-head lead over Tiafoe, and the recent results reinforce his dominance in this rivalry. Three of their four meetings have occurred at American events, and Shelton has won each of the last three. His most recent victory came right here at the US Open in a Quarterfinal, 6-2, 3-6, 7-6(7), 6-2, a result that demonstrates he can outlast Tiafoe even when the match tightens. He also defeated Tiafoe in a Final in Houston and in a Quarterfinal in Washington. Tiafoe's lone win in the series came in a five-set US Open encounter at the Round 3 stage, so he has shown the ability to beat Shelton, but only in an extended match. Shelton's ranking of No. 5 compared to Tiafoe's No. 26 reflects a significant gap in their current standing on tour. No odds are available, but the head-to-head record and ranking differential both point clearly toward the higher seed.

Prediction: Shelton wins in four sets.