Many commentators have described the importance of a team being able to score an away goal, even when losing that leg of the tie, as it mathematically does give that team a chance to redeem itself on home soil by leveling the tie on aggregate while using the away goal as a tiebreaker. For example, in the 2007 UEFA Champions League round of 16, while Bayern Munich lost the first leg 3–2 at Real Madrid, Bayern later won 2–1 at home to level the tie on aggregate, but it was Bayern's away goals scored during their first leg loss that let them advance. At the 2012–13 UEFA Champions League semi-finals, despite falling 4–1 in the first leg at Borussia Dortmund, Real Madrid would have been able to advance if at home it managed to hold Dortmund to 3–0; during the second leg Real Madrid scored two goals in the last ten minutes but were unable to score the third goal that would have sent them through to the final (Dortmund advanced 4–3 on aggregate). In the other semi-final, however, after FC Barcelona was defeated away by Bayern Munich 4–0, commentators considered Barcelona essentially eliminated because Bayern could seal the tie by scoring one away goal even if Barcelona managed to score five goals (Bayern managed a 3–0 win in the second leg to advance 7–0 on aggregate).