A football team isn't just about the people who start the match. A complete squad is a lot more than simply having eleven good players, it's also about those who can come off the bench and make a difference.
What have the substitutes contributed to Boca and River in this season's CONMEBOL Libertadores?
Boca have used 18 players, one more than River's 17. Although the substitutes have played less minutes for Boca: 578, compared to River's 872.
Guillermo Barros Schelotto's reserves have been more influential: from 18 shots they've scored seven goals and provided two assists. Marcelo Gallardo's bench options have taken 20 shots, scored three goals and provided two assists.
You only need to look back at the first match in the Libertadores final to see how important the bench has been to Boca. Darío Benedetto came on for the injured Cristian Pavón and scored a header to make it 2-1 just before half time.
But 'Pipa' had already shown his value as a substitute: he'd scored twice in the first leg of the semi-final against Palmeiras and another in the second leg in Sāo Paulo. During that two-legged stage Benedetto only played a total of 41 minutes but proved crucial as Boca progressed.
Carlos Tevez is Schelotto's most used option off the bench, coming on a total of five times. In 87 minutes of playing time he's scored two goals and almost grabbed an assist in the first leg against River. Tevez played in Benedetto but Armani saved blocked the effort. Edwin Cardona has also come off the bench regularly, four times to be precise, and has scored one goal. Sebastián Villa, in two substitute appearances, has provided an assist and Ramón Ábila - in just one cameo from the bench - created a key chance.
Ignacio Scocco and Juan Fernando Quintero are the most common replacements for Gallardo, both coming on six times each. The Colombian has scored once while the Argentine is goalless. Camilo Mayada has come off the bench four times and scored once. Pity Martinez has made a single cameo appearance and provided an assist. Nicolás De La Cruz has also come off the bench once and given his side an assist too.