The 1988 Marlboro Cup was a four team soccer tournament hosted at the Los Angeles Memorial Coliseum in August. The four teams competing were the League of Ireland XI, Club Universidad de Guadalajara, El Salvador and Guatemala. The League of Ireland XI lost their first game 3–0 against Club Universidad on August 5 with Mick Neville conceding an own goal. They then lost 1–0 to El Salvador in a third place play off two days later. The tournament was won by Guatemala who beat Club Universidad 3–2 in the final.[1]
| Date | Team #1 | Result | Team #2 | Round |
|---|---|---|---|---|
| August 5 |  Club Universidad de Guadalajara | 3-0 | League of Ireland XI | Semi-finals |
| 1–2 | ||||
| August 7 | 1-0 | Third Place Match | ||
| 3–2 | Club Universidad de Guadalajara | Final |