Luke Donald will face Jim Furyk in the third match.
Victory was not cemented until late in the third match, when Watson was in Nonfiction.
In the third match, against Romania, Harkes was playing with an earlier yellow card.
Expect a similar outcome in the third match of the day on Arthur Ashe Stadium.
Oliver Wilson will make his Ryder Cup debut in the third match out, partnering Henrik Stenson.
Europe are one up in the third match after the first hole.
In the third match of the day, Irumson defeated Baltusrol, 9½ to 5½.
They also scored first in 1992: after two 0-0 David Plattd Platt gave them the lead in the third match against Sweden.
In the third match Geir Helgemo (East for Europe) opened three clubs; Jill Levin (South) overcalled three spades; Tor Helness (West) jumped to five clubs; and after two passes South doubled.
They have yet to drop a set but now face the highly experienced No 2 seeds, Daniel Nestor and Nenad Zimonjic, in the third match on Court 3 this afternoon.
Third-ranked Novak Djokovic, the defending champion, will play Andrea Stoppini in the third match on center court, after the match between his fellow Serb and the women's No. 1, Jelena Jankovic, and Yvonne Meusburger.
