But how much does the Argentinian tinker during games compared to other managers?
Using data from industry-leaders Wyscout, we've taken a look at how many substitutions Bielsa has made during Leeds' table-topping campaign so far - and we've compared that figure to the Whites' Championship rivals for good measure.
Simply scroll down and click through the pages to view where Leeds United rank on the list.
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Revealed: The number of substitutes Marcelo Bielsa has made compared to Leeds United's rivals | Getty
. WEST BROM
Total number of Championship substitutions made this season: 111 | Getty
. HULL CITY
Total number of Championship substitutions made this season: 109 | Getty
. SHEFFIELD WEDNESDAY
Total number of Championship substitutions made this season: 108 | Getty
. FULHAM
Total number of Championship substitutions made this season: 108 | Getty
. NOTTINGHAM FOREST
Total number of Championship substitutions made this season: 107 | Getty
. BLACKBURN ROVERS
Total number of Championship substitutions made this season: 107
. STOKE CITY
Total number of Championship substitutions made this season: 106 | Getty
. READING
Total number of Championship substitutions made this season: 106 | Getty
. BRISTOL CITY
Total number of Championship substitutions made this season: 105 | Getty
1. WEST BROM
Total number of Championship substitutions made this season: 111 | Getty
2. HULL CITY
Total number of Championship substitutions made this season: 109 | Getty
3. SHEFFIELD WEDNESDAY
Total number of Championship substitutions made this season: 108 | Getty
4. FULHAM
Total number of Championship substitutions made this season: 108 | Getty
5. NOTTINGHAM FOREST
Total number of Championship substitutions made this season: 107 | Getty
6. BLACKBURN ROVERS
Total number of Championship substitutions made this season: 107