Marc Skinner said decisions from the referee cost his Man Utd side in their heavyweight WSL clash with holders Chelsea.
The Londoners claimed a 1-0 win thanks to Sam Kerr's superbly-taken 23rd-minute strike at Kingsmeadow. In a game of few chances, United often dominated possession but failed to find the equaliser, dropping to second in the WSL table.
But Skinner believes his side were denied two "stonewall" penalties by referee Cheryl Foster. Nikita Parris looked to have been fouled by Chelsea defender Kadeisha Buchanan in the first-half, while Ona Batlle also looked to have been nudged over in the box by Jess Carter.