Worth keeping an eye on this game because it features the next two teams the USA will play in the 2017 CONCACAF Men's U-17 Championship.
Mexico is expected to be the primary challenger to the USA's regional title ambitions; El Salvador is thought to be in a battle with Jamaica for third place in Group C of this tournament.
Teams can recover from a slow start in this competition. The CONCACAF U-20 Championship was played under the same format, and the US team that won the title lost its opening game. Still, a loss for Mexico in this match would be a shock, and suggest El Tri isn't at the standard expected of it at this level. Indeed, (at least) until a few more games have been played and the relative strengths of the contenders for this Championship are understood, any teams that don't lose to Mexico or the USA will be seen as having achieved something exceptional.
El Salvador is very much second-favorite in this game, and will be regarded as having done well if it even threatens to take points off Mexico.
Per livesoccertv.com, here's where to find the game: