An injury to Borussia Dortmund’s 18-year-old Greek-Belgian attacker Konstantinos Karetsas has increased the chances of 17-year-old U.S. winger Mathis Albert making his UEFA Champions League debut on Tuesday when BVB plays at Azerbaijan club Sabah FK. Four other teams with Americans are also in Matchday 3 action on Tuesday.

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Soccer America Executive Editor Mike Woitalla has written freelance articles about soccer for more than 30 media outlets in nine nations. The winner of eight United Soccer Coaches Writing Contest awards,...