The Lake County are 70 minutes away from a provincial decider.
Westmeath Footballer Luke Loughlin says players "had a point to prove" following their win over Meath yesterday.
The Down's man finished with six points as his side secured a 4-18 to 25 points win against the Royal's in the Leinster Quarter-Final.
Matthew Whittaker and Shane Corcoran scored their side's two first half goals, with Corcoran adding another in the second half, before victory was sealed thanks to a Danny McCartan strike in the final minute.
Victory for the Lake County means they will now face Kildare in the semi-finals.
Loughlin says a performance was needed in order to win:
Luke Loughlin spoke to the media after the game:
Kilbeggan Races Returns This Evening
Aoife Dalton To Start For Ireland In Six Nations Clash With Scotland
Offaly Welcome Wexford To O'Connor Park For All Ireland Opener
Leinster Success On The Line For Westmeath Ladies Footballers
Shane Lowry In Contention After Opening Round At PGA Championship
John Heslin Named In Westmeath Squad For Leinster Final
Midlands Sports Stars To Speak At Women’s Leadership Conference In Westmeath
Laois Set For Crucial Joe McDonagh Clash With Down
Shane Lowry In Action At PGA Championship
Leinster SHC: Season Defining Game For Offaly And Wexford
Athlone Town On The Road In First Division This Weekend
Leinster SFC: Westmeath Manager's Only Focus On Winning Provincial Title
Irish Rail To Provide Extra Services For Leinster Final
Retiring Midlands Rugby Star Converts Sports Centre Planning Application
We Want To Win Two Points Every Game - Killian Sampson
Joe Ward Set For Mega Fight Night At Athlone Town Stadium
Shane Lowry Set For PGA Championship Hunt
We Were Second Best Against Laois - Kevin O'Brien
Offaly Players Deserve Credit For Clare Victory - Mickey Harte
Laois Progress To Next Round Of Tailteann Cup