The summer transfer window is always an intriguing time in Scottish football due to contract situations and what seems a constant churn of players as individuals are largely not given long-term deals. There are more than 100 players in the Ladbrokes Premiership who are out of contract at the end of the current campaign.
CIES Football Observatory have researched clubs from 87 top divisions worldwide and the number of players fielded in domestic league matches since January 2015.
Click and scroll through to see the number of players Hearts and Hibs have used as well as their top-flight rivals, from fewest to the most.
1. St Johnstone - 67 players
Saints have been aided by the continuity of the same manager in Tommy Wright. Photo: Alan Harvey - SNS Group
2. Celtic - 77
Celtic have not had to overhaul the squad that much with a core of the side remaining through the majority of their recent success. Photo: Bill Murray - SNS Group
3. Aberedeen - 77
There has been a consistency to the squad brought by the continued management of Derek McInnes. Photo: SNS Group Rob Casey
4. Hibs - 86
During that time Hibs have played in both the Championship and Premiership, returned to Europe, won a Scottish Cup and had four managers. Photo: Euan Cherry - SNS Group