Defensive Runs Saved (DRS) is a baseball statistic that measures the number of runs a player saved or cost his team on defense relative to an average player. Any positive number is above average, and the best fielders typically fall into a range of 15–20 for a season. The statistic was developed by Baseball Info Solutions. The record for most defensive runs saved in a single season is held by center fielder Kevin Kiermaier, who saved 42 runs in 2015.