The teenage prospects stood above the crowd while making their international debuts in a 1-1 draw with the European champions, allowing the U.S. to cap a dreadfully disappointing 2017 with a dose of optimism.

A blunder from goalkeeper Ethan Horvath showed that experimenting with youth does have its pitfalls. But McKennie punctuated an impressive all-around outing with a debut goal in the 21st minute, and Adams proved to be a handful with an energetic display of his own.

Here are Goal’s full player ratings from the Americans’ friendly against Portugal:

GK ETHAN HORVATH, 2: Growing pains are part of the process in a game like this, though there’s no beating around the bush here: The 22-year-old conceded a howler on Vitorino Antunes’ equalizer, then saw an ill-advised pass nearly lead to a second for Portugal.

D DEANDRE YEDLIN, 6: There was a shaky sequence or two early, but Yedlin settled in and delivered a steady defensive outing while also jumping into the attack at opportune moments.

D MATT MIAZGA, 6: The center back grew more confident as the match went on, doing well to read attacks and intervene. An ill-advised push did negate a would-be John Brooks goal, though.

D JOHN BROOKS, 7: It was a commanding performance in central defense from the 24-year-old, who won his battles and saw his emphatic finish off a corner kick canceled out by an unrelated foul.

D ERIC LICHAJ, 5: The veteran delivered a solid enough outing at left back, even if his service left something to be desired. He did test Beto with one stinging effort.

M DANNY WILLIAMS, 6: A surprise selection as captain, Williams delivered a rangy performance in central midfield while successfully shielding the back line.

M TYLER ADAMS, 7: The 18-year-old offered a tantalizing glimpse of his potential on the right flank, playing with tenacity and nearly bagging a debut goal early in the second half.

M KELLYN ACOSTA, 6: Quietly got the job done in an advanced midfield role, doing well to apply pressure and keep the ball moving.

M WESTON MCKENNIE, 8: The 19-year-old Schalke midfielder looked as good as advertised in his U.S. debut, covering acres of space while winning his fair share of tackles. He opened his U.S. account with a poised finish and nearly made it a brace with a header off the crossbar.

M JUAN AGUDELO, 5: Wasn’t overly involved while playing somewhat out of position on the left flank, though he did hold the ball up well at times.

F C.J. SAPONG, 6: The Philadelphia Union striker was lively up top, constantly putting his body on the line and floating out wide to set up McKennie’s opener.

Substitutes

GK BILL HAMID, 5: Had one nervy moment controlling a rebound but delivered an otherwise stable performance over 45 minutes that saw him rarely tested.

D CAMERON CARTER-VICKERS, 6: The 19-year-old made some key challenges to highlight a promising international debut, showing chemistry with Miazga in central defense.

D JORGE VILLAFANA, 5: Replaced Lichaj for the final 31 minutes, keeping things tidy on his side of the field.

M LYNDEN GOOCH, 6: The Sunderland winger played with plenty of energy, using his pace to create separation and generate some momentum going forward.

F DOM DWYER, 5: Was starved for service after coming on for the final 13 minutes up top.

M ALEJANDRO BEDOYA, 5: Didn’t see much of the ball during a late cameo.