KANSAS CITY, Kan. — Jacob Peterson scored off a Benny Feilhaber assist, and Sporting Kansas City kept the Portland Timbers winless on the road with a 1-0 victory Sunday.

Peterson flicked a header off a free kick by Feilhaber to the bottom-right corner past goalkeeper Jake Gleeson in the 50th minute to give Kansas City (10-10-4) its second straight win.

Portland (7-8-8) has lost two straight after a nine-match unbeaten streak. The Timbers are 0-5-6 away from home.

“We knew this was going to be a difficult game,” Timbers coach Caleb Porter said. “We had some key guys out. I thought that showed at times, defensively.”

Neither of the Timbers’ first-choice pairing in central defense was available. Liam Ridgewell was suspended by Major League Soccer for missing Thursday’s All-Star Game while nursing a calf injury, and Nat Borchers is out for the season with an Achilles injury. The Timbers started Jermaine Taylor and Amobi Okugo, who made his first start for Portland since joining the team in May.

“We’ve had more injuries than anybody in the league this year,” Porter said. “Last year we were one of the best defensive teams in the league and we don’t have both center halves in this game and you still see with Jermaine Taylor and Amobi (Okugo) that they still did a good job.”

Alec Kann made a diving stop of a strike by Darlington Nagbe — Portland’s only shot on goal — in the 10th minute.

The Timbers had chances in stoppage time. Jack McInerney blasted a right footer from the left side of the box off the crossbar, and Fanendo Adi’s header, off a cross by the debuting Vytautas Andriuskevicius, from the right side of the 6-yard box missed wide right about three minutes later.

“Usually, our quality shows through in moments like those,” Porter said. “We’re a good attacking team and have been all year. I’m confident we will finish those moving forward.”