No. 4 Andrey Rublev maintained the honours of the seeds on the ATP Halle grass with his 7-6(4), 6-2 defeat of Philipp Kohlschreiber on Friday to reach the semi-finals.
The tournament which has lost Roger Federer, Alexander Zverev and Daniil Medvedev will make do with the Russian who knocked out the last German in contention.
Wild card Kohli, 37 and the 2011 champion, was competing in his 16th edition at the Wimbledon clone event; Rublev moved through in 81 minutes with nine aces and 29 winners while never facing a break point.
“I’m happy with my performance into the semi-finals here for the first time,” the winner said upon reaching his sixth semi of the season.
“The first set was really tough. He was 3/0 up in the tie-break and I came back, which was the key.
“After the first set, I think he mentally went down and I was pumped up. I hit a couple of good returns in the first game of the second set.”
Rublev will clash on Saturday against qualifier Nikoloz Basilashvili, a winner over South African Lloyd Harris 6-4, 7-6(5) in just under two hours.
The No. 30 from Georgia improved to 19-15 for the season and is looking to continue a run of luck at German events.
Three of his five career titles have been won in the country, two in Hamburg and Munich this spring.
Felix Auger-Aliassime continued his momentum after defeating 10-time champion Roger Federer this week, winning his quarter-final over American Marcos Giron 6-3, 6-2.
The Canadian needed only an hour to advance in a rout of the No. 75, competing in only the second grass-court main draw of his career.