Washington Post (blog): D.C. United to begin 2015 campaign with Champions League match in Costa Rica
CSN Washington:United open Champions League play ahead of MLS start
MLS Multiplex: 2015 MLS Team Preview: D.C. United
Screaming Eagles: From Armadillos To Alajuelense
Sounder At Heart: The New MLS - Stadiums and Attendance
MLSsoccer.com: Champions League: DC United test out turf in Costa Rican heat ahead of Alajuelense clash
Black And Red United: D.C. United CONCACAF Champions League Scouting Report: LD Alajuelense
Black And Red United: D.C. United vs. LD Alajuelense lineup: Veterans take the field Thursday nights
Black And Red United: D.C. United vs. LD Alajuelense staff and reader predictions
D.C. United: D.C. United Preseason Report: Costa Rica Day 2
D.C. United: D.C. United signs Travis Worra