Rafael Nadal is one win away from the Stuttgart title, with Viktor Troicki standing in his way on Sunday. In ‘s-Hertogenbosch, meanwhile, David Goffin and Gilles Muller are battling in the final.

Stuttgart: (1) Rafael Nadal vs. (8) Viktor Troicki

Nadal and Troicki will be going head-to-head for the fifth time in their careers when they meet in the final of the Mercedes Cup on Sunday. All four of their previous encounters have gone Nadal’s way, but they have never faced each other on anything other than hard courts. The two veterans have also not squared off since 2010, when the Spaniard prevailed 6-1, 6-3 in Doha and 7-6(4), 4-6, 7-6(7) in Tokyo.

This is the first-ever grass-court final for Troicki, who has advanced with wins over Borna Coric, Alexander Zverev, Sam Groth, and Marin Cilic–the latter in a third-set tiebreaker. The 28th-ranked Serb is 23-12 on the season and…