Despite playing his first tournament in 20 months, Kei Nishikori has produced a high level this week to reach the final at the ATP Challenger 75 event in Palmas del Mar, Puerto Rico. The former World No. 4 defeated Brazilian Gustavo Heide 6-4, 6-2 Saturday to advance to the Caribbean

© Vaughn Ridley/Getty Images Kei Nishikori will next play American Mitchell Krueger at the Palmas del Mar Challenger. This article contains: The 33-year-old is a 12-time tour-level titlist Kei Nishikori