Sentence:  By the end, Sunderland were lucky to lose by the same scoreline Northampton Town suffered against Southampton, in 1921. The Sunderland manager, Gus Poyet, <WSD>lamented</WSD> that it was “the most embarrassed I've ever been on a football pitch, without a doubt”. 
Meaning of the word marked with <WSD> tags:  To feel great sorrow or regret; to bewail.