Posh won a penalty shootout 4-1 after the tie had finished 1-1 after 90 minutes.
The game featured a first Posh goal for Joel Randall and a dynamic substitute display from Jeando Fuchs.
Ratings Key: 10-Brilliant, 9-Outstanding, 8-Very good, 7-Good, 6-Okay, 5-Poor, 4-Very poor.
13. JEANDO FUCHS (for Collins, 62 mins)
The substitute midfielder immediately lifted the home crowd by snapping into tackles. He made a strong case for a start in the not-too-distant future as he also passed the ball pretty well - 8 Photo: Joe Dent/theposh.com
14. JOE TOMLINSON (for Poku, 71 mins)
Looked more positive than Burrows at left-back. Almost won the game with a 20-yarder in added time that was well saved. Excellent penalty conversion in the shootout - 7. Photo: Joe Dent/theposh.com
15. JOSH KNIGHT (for Kioso, 71 mins)
Gave his all as always. A top team man even now he's on the transfer list - 6. Photo: Joe Dent
16. JONSON CLARKE-HARRIS (sub for Jones, 95 mins)
Brought on so late just to take a penalty which he blasted home impressively, but he caused confusion in the home defence before that and almost won the game with the last-kick - 7. Photo: Joe Dent/theposh.com