This is not the first time that Boyd has injured that ligament. He partially tore it in a preseason friendly this summer and only recently returned. He did not have to undergo surgery to fix the ligament the first time around, but he will have to this time and he will go under the knife in the next few days.
It has been a tough year for Boyd. He was left off of the United States' World Cup team, which was a bit of a surprise to some. Then he signed with Leipzig in Germany's second division believing that the well-funded club could earn promotion to the Bundesliga, but he's been hurt for most of the season and the team is sitting mid-table.
The U.S. has had trouble at striker. Jozy Altidore is still a fine player, but he's hardly amazing, and the Americans lack depth. Any striker they can get is helpful, if only to give them more options and hope that one of them comes good. Boyd was one of those hopes, especially as a big, strong and hard-working player at just 23 years old, but he's hurt yet again and it's beginning to look like the entire season might be lost.