By Chris Smith Philadelphia Union captain Alejandro Bedoya says he and his teammates are relishing the ‘underdog role’ in their MLS Cup clash with LAFC. The Union head to Banc of California Stadium on Saturday to face a team they finished level on points with during the regular season, only losing the Supporters’ Shield race on games won – Major League Soccer’s primary tiebreaker. What’s more, the Union enjoyed the best offensive and defensive records in MLS during the regular season, scoring 72 goals and conceding just 26 in 34 matches. However, with home advantage and will a lineup of attack…