In 2010, Philadelphia was on top of the sports world. The Phillies were en route to a third straight appearance in the NLCS, the Flyers were in the Stanley Cup Finals, the 76ers hired Doug Collins and were starting a season that would finish with a playoff appearance and the Eagles were again NFC East champions, this time behind a resurgent Michael Vick.

Fast forward to 2013 and a dramatically altered landscape of the Philadelphia sports scene. A number of subpar seasons led to coaching changes for each of the city’s four professional sports franchises in the past 10 months, most recently with Monday morning’s firing of Flyers coach Peter Laviolette. As Geoff Mosher of CSN Philadelphia points out, this means that new Eagles head coach Chip Kelly, hired in January, is the longest tenured coach in the city. (Dates of tenure as of 12 p.m. on Monday.)

Jan. 16 — Chip Kelly hired as Philadelphia Eagles head coach. Current tenure: 264 days

Aug. 14 — Philadelphia 76ers introduce Brett Brown as new coach, replacing Doug Collins, who resigned in April. Current tenure: 54 days

Aug. 16 — Charlie Manuel fired as Philadelphia Phillies manager, replaced by Ryne Sandberg. Current tenure: 52 days

Oct. 7 — Philadelphia Flyers fire coach Peter Laviolette, elevate assistant Craig Berube. Current tenure: 3 hours

All coaches are on their first professional head coaching jobs, meaning that the total experience of all Philly head coaches is 374 days. This could lead to some sporting growing pains for the city. At least the city’s fans are the patient sort.