Denis Istomin earns a final spot at the Chicago Oracle Challenger

Denis Istomin contested with Bjorn Fratangelo in semi-finals and didn’t face a break point until the final game, during which he saved three against the erratic American. Istomin arrives in the final without having been broken all week.

In the final, he will struggle with American Reilly Opelka, who beat Dominik Koepfer of Germany 6-3 7-6(3) to advance to the final.