The New Zealand international defender started the Premier League encounter at the Emirates Stadium in North London and played for the entire 90 minutes.
“The New Zealand defender was at the heart of a brilliant defensive display by the Hammers but perhaps his most important role was looking after debutant Reece Oxford,” the 57-year-old former Tottenham forward wrote on BBC Sport.
“Oxford insists that it was Reid's continuous encouragement throughout the match against the Gunners that provided the platform for the 16-year-old midfielder to perform so impressively.
“It could have been a nightmare for Oxford and West Ham had it not been for Winston Reid's calming influence at the back.”
Reid is one of the best players in the current West Ham squad, and he did brilliantly in defence against the Gunners.
The former Midtjylland star has been on the books of the London outfit since 2010 and will play a key role in their aim to finish in the top eight of the Premier League this season.
Slaven Bilic’s side were defensively strong against Arsenal, and they will need to be so as the season progresses.