Jose Riga took charge of his first game at Bloomfield Road, as his patched-up side lost to Burnley.
The new boss watched on as a number of his new signings made their first appearances in tangerine along with a host of trialists.
Tomasz Cywka, Donervon Daniels and Peter Clarke all started for Pool, alongside Bristol City keeper Elliot Parrish and former Brighton man Andrea Orlandi who were both hoping to earn contracts for the coming season.
Pool held their own in the first half before Marvin Sordell fired the winner for the Premier League new boys on 68 minutes.
Parrish, McMahon, Triallist, Daniels, Clarke, Perkins, Zenjov, Orlandi, Mellis, Delfouneso, Cywka.
Subs: Dunne, Ambrose, Waddington, Telford.