Completed the following sentence: During the group stages of the season's edition of Champions League, Costa only managed three substitute appearances, totaling 23 minutes played, as Shakhtar finished second in the group behind
<unk> <unk> <unk> <unk> Following a underwhelming first half of the 2012<unk>13 campaign, Costa came off the bench to score a vital goal in Shakhtar's 2<unk>2 first leg draw with Borussia Dortmund in the Champions League Round of 16 tie on 13 February 2013.