Monaghan were resounding 12-point winners over a poor Meath side in the Allianz Football League Division 3 in Clones.
Jamie Queeney gave the Royals a great start as he found the net after 10 minutes to give Meath a two-point lead.
Gavin Doogan, the excellent Conor McManus and Kieran Hughes helped the home side gain the lead at the break, 0-07 to 1-02, leaving the Royals still firmly in the game.
But Meath would score just twice, and had a half-hour scoreless period as the Farney ran riot.
McManus top scored with 0-08, including six from play, while Darren Hughes bagged a goal and he finished the scoring with a point after Conor Gillespie's consolation three-pointer.
A 1-18 to 2-03 defeat gives Meath a fight on their hands to get out of Division 3 already.
Fermanagh made a dream start to their league season by controlling proceedings against Wicklow in a 10-point success.
Peter Canavan's men led 0-11 to 0-03 at the break and Shane McCabe's goal sealed a 1-16 to 0-09 win.
Sligo will rue a controversial penalty as it proved the difference between the sides as Dr Hyde Park as Roscommon started with a 1-11 to 1-08 victory.
The home side were two points ahead when the Yeats men hit back with a goal after Stephen Coen fed Adrian Marren to score.
A topsy turvy encounter was level in the 27th minute at 0-07 to 1-04 before Donie Smith scored a point and then converted from the penalty spot.
Sligo were wasteful in the second period and missed chance to close the gap with the Rossies holding on for a three-point win.
Antrim edged a tight battle with Cavan, winning 1-14 to 2-09 as both sides finished with 14.
Mark McKeever scored a goal for Cavan in the 16th minute as they took a narrow 1-05 to 0-07 advantage at half-time.
Antrim scored 1-05 at the beginning of the second half without reply.
A Martin Dunne penalty gave Cavan hope but points from Ryan Murray and Brendan Herron were enough for the Saffrons,
Cavan's Tomas Corr and Antrim's Sean McVeigh were the players dismissed.
League Sunday, RTÉ Two, 7pm: Highlights and analysis from the day's National Football League matches, including Mayo v Kerry in Division One, plus Galway v Derry and Wexford v Longford in Division Two