Revealed: How successful Jack Ross' Sunderland subs are compared to Portsmouth, Barnsley and other League One clubs
Football managers are often held accountable for their substitutions - but which managers make best use of them?
Bookmaker bwin has assessed every League One game from the previous five seasons to discover the managers and players who have made the biggest difference from the sidelines. Scroll down to see the results.
1. Jack Ross has made some important substitutions this season
On average, Sunderland boss Jack Ross has made more effective substitutes than any manager in League One over the last five seasons.
Burton boss Nigel Clough has also made some big calls, and the Brewers have picked up 29 points after Clough has made his first change in the third tier.'That works out at 12 points over the course of a season.
Like Ross, Barnsley boss Stendel has had just one season in League One, yet the Tykes have picked up 10 points after making their first change - the equivalent of 11 points over the course of a season.