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Kansas City, Kan. • Gyasi Zardes had his first two-goal international game, 17-year-old Christian Pulisic became the youngest American scorer in the modern era and the United States routed Bolivia 4-0 in an exhibition Saturday night to sweep its three warmup matches for next month's Copa America.

Zardes scored in the 26th and 52nd minutes around defender John Brooks' goal in the 37th. Pulisic, the youngest foreigner to score in the Bundesliga, got the final goal in the 69th minute. At 17 years, 253 days, he bettered the mark set by Juan Agudelo (17-359) against South Africa in 2010.

The 29th-ranked Americans had their largest victory margin against a South American opponent, beat opponents from that continent in consecutive matches for the first time and swept their three warmup matches by a combined 8-1 after defeating Puerto Rico and Ecuador.

At the Copa America, the U.S. plays fourth-ranked Colombia on Friday in the opener at Santa Clara, California, then faces Costa Rica four days later at Chicago and closes the first round versus Paraguay on June 11 at Philadelphia.

Alejandro Bedoya assisted on the first two goals against 79th-ranked Bolivia.

The U.S. went ahead after Geoff Cameron played a 20-yard pass to Clint Dempsey, who flicked the ball to Bedoya on the right flank. He in turn lofted a one-touch pass over a shoulder of Zardes, who streaked past defender Nelson Cabrera and let the ball take a bounce. Zardes one-timed a right-footed shot from 19 yards over onrushing goalkeeper Guillermo Viscarra, who was making his international debut.

Brooks doubled the lead after U.S. captain Michael Bradley rolled a through pass on a free kick from 35 yards out to Bedoya, who burst past Carmelo Algaranaz and from the corner of the 6-yard box made a sliding cutback pass in front of the goal. Brooks, 21, redirected the ball in with his left foot from 7 yards for his third international goal. Brooks scored late against Ghana to win the Americans' 2014 World Cup opener and also got a goal in an exhibition win at the Netherlands last year.

Zardes, 25, scored again after playing the ball back to Bradley in midfield. He lofted a pass to Bobby Wood on the left side of the goal, Wood crossed to Zardes, who beat defender Luis Gutierrez and scored again with his left foot, this time from 6 yards. Zardes has five goals in 26 national team appearances.

Pulisic, who made debuts for Borussia Dortmund in January and the U.S. in March, scored after Jermaine Jones forced a turnover. Jones exchanged passes with Darlington Nagbe, who ran past three Bolivians and rolled the ball into Pulisic's path. The teenager slid the ball to Viscarra's left from right of the penalty spot, causing many in the crowd of 8,894 to chant his name.

U.S. coach Jurgen Klinsmann shifted Matt Besler, normally a central defender, to left back in his starting lineup and started Michael Orozco at right back. Fabian Johnson replaced Besler at the start of the second half and DeAndre Yedlin came in for Orozco, joining Brooks and Cameron in central defense, the first time the likely back four for the match against Colombia played together. Cameron had not played since injuring a hamstring in Stoke's season finale on May 15.

Bedoya and Jones flanked Bradley, who dropped back in a defensive midfield role; Zardes and Wood played aside Dempsey; and Brad Guzan started his fourth straight match in goal, making the lineup for the first 18 minutes of the second half the possible starting 11 against Colombia. That array was broken up when Pulisic and Nagbe replaced Zardes and Bedoya.