Man of the match
Neil McManus (Antrim)
Was at the hub of most of his side's best moves. While he shot five wides from open play, he had an impeccable record with placed balls as part of his 11-point haul.
Conor McCann's well-taken second goal in the 31st minute put Antrim eight points ahead.
After their fine display against Galway, Westmeath let Antrim score 2-16 in a lethargic first-half display.
Tony Carroll had an easy afternoon in a sporting contest.
What they said
Dinny Cahill (Antrim manager):
"There were aspects of the game we were happy with, but other aspects we weren't happy with. So we can get working on them for next weekend."
Brian Hanley (Westmeath manager):
"The first 35 minutes was a shambles. I just wanted to stop the game after 15 minutes and start again."
Wides: Antrim 12 (2); Westmeath 4 (3)
Frees: Antrim 9 (3); Westmeath 9 (5)
Yellow cards: Antrim 2 (1) (K McGourty, M Herron); Westmeath 4 (2) (D McCormack, P Greville, D McNicholas, B Smyth)
Antrim will face Carlow at Casement Park next Saturday in the second round of the qualifiers. Westmeath exit the championship.