Three-time champion Michael van Gerwen opened his Grand Slam campaign with a rapid 5-0 win over Adam Hunt that took just 9 minutes.
The world number one impressed, averaging 105.85 as he began with a perfect start after recovering from recent back troubles.
"I put on a good performance but I was maybe punishing myself too hard," Van Gerwen admitted.
"I feel good. The most important thing is I won today and I can move onto the next one.
"I'm not going to say 'I'm back' yet but I'm definitely heading in the right direction. I need a few more games like this."
Next up for Michael today (Tues) is a clash with Gabriel Clemens who also picked up a win on the opening night of the Grand Slam.
The German landed checkouts of 122 and 112 as he defeated Joe Cullen 5-2 in a high-quality encounter.
Reigning champion Gerwyn Price was pushed all the way by BDO Women’s Champion Mikuru Suzuki, as he survived four missed match darts to win 5-4 on Day One of the BoyleSports Grand Slam of Darts in Coventry on Monday.
Suzuki produced big finishes of 135 and 116 to force the clash into a deciding leg after Price hit 13 and 15 dart legs to get within one of victory.
"I didn't play well there at all. I was let off, fair play to Mikuru she was brilliant," said Price.
"I started poorly and I was chasing the game from then on. I shouldn't have done that given how I've been playing the last few weeks.
"Fair play to Mikuru for taking out two ton-plus checkouts to put me under pressure. I was lucky to get over the winning line but a win's a win."
The nine-day tournament began with a double session of action at the Ricoh Arena, as the 32 players competed in their first of three games in the round-robin stage.
Elsewhere in Group G, Price's World Cup winning partner Jonny Clayton also won 5-4 against Ryan Joyce 5-4, producing a 116 checkout to take the deciding leg.
The performance of the day came from Dimitri Van den Bergh, who set a new tournament average of 114.85 and missed double 12 for a nine-darter in his 5-1 win over Ricky Evans in Group H.
After going 1-0 down, the World Matchplay champion won each of his five legs in five visits to the board or fewer to surpass the previous record of 114.65 set by Phil Taylor against Christian Kist at the 2014 event.
Van den Bergh came agonisingly close to doubling his tally of televised nine-darters, having struck his first at the 2018 Grand Slam.
"I didn't even realise my average was that high, so it's a nice surprise to break the record," Van den Bergh admitted.
"I'm surprised I played that well given how I felt before the game. My mind wasn't there in practice and I was very wary of the threat Ricky poses, he's smashed me before.
"But I always say when I go up on that stage I can play and I showed that today."
Van den Bergh's Group H rival Nathan Aspinall got his campaign off to a perfect start as he whitewashed BDO Champion Wayne Warren 5-0.
In Group E, two-time runner-up Peter Wright suffered a 5-4 defeat to rising Dutch star Dirk van Duijvenbode, while South African debutant Devon Petersen continued his good form with a 5-2 win against Ian White.
Portugal's Jose De Sousa also enjoyed a winning debut, averaging just shy of a ton in a 5-4 defeat of Krzysztof Ratajski in Group C, which also saw world number four Michael Smith average 102.51 in a 5-1 defeat of Lisa Ashton.
In Group F, two-time runner-up James Wade impressed with a 102.44 average as he brushed aside Australian debutant Damon Heta 5-2, while Dutchman Jermaine Wattimena continued his good form by overcoming an out-of-sorts Glen Durrant 5-1.
Two-time runner-up Gary Anderson, suffering from a knee cartilage problem, limped to a 5-3 victory over 18-year-old Czech debutant Adam Gawlas in Group B, as Simon Whitlock punished eight missed doubles from Ryan Searle as he ran out a 5-3 victor.
In Group D, Dave Chisnall recovered from 3-1 down and survived two match darts in a deciding leg as he edged out Luke Humphries 5-4, while Rob Cross got his campaign off to a strong start with a 5-1 defeat of Justin Pipe 5-1.
Tuesday's second group matches see Monday's winning players face off and the losing players also meet, before the final games in the round-robin stage take place across Wednesday and Thursday.
Day Two will be broadcast live on Sky Sports, as well as through the PDC's international broadcast partners including RTL7 and DAZN and for PDCTV Rest of the World Subscribers.
BoyleSports Grand Slam of Darts
Monday November 16
8x Group matches
Rob Cross 5-1 Justin Pipe (D)
Dave Chisnall 5-4 Luke Humphries (D)
James Wade 5-2 Damon Heta (F)
Simon Whitlock 5-3 Ryan Searle (B)
Jermaine Wattimena 5-1 Glen Durrant (F)
Nathan Aspinall 5-0 Wayne Warren (H)
Dimitri Van den Bergh 5-1 Ricky Evans (H)
Gary Anderson 5-3 Adam Gawlas (B)
8x Group matches
Jonny Clayton 5-4 Ryan Joyce (G)
Gabriel Clemens 5-2 Joe Cullen (A)
Jose de Sousa 5-4 Krzysztof Ratajski (C)
Michael Smith 5-1 Lisa Ashton (C)
Michael van Gerwen 5-0 Adam Hunt (A)
Gerwyn Price 5-4 Mikuru Suzuki (G)
Dirk van Duijvenbode 5-4 Peter Wright (E)
Devon Petersen 5-2 Ian White (E)
Tuesday November 17
Afternoon Session (1300 GMT)
8x Group matches
Ricky Evans v Wayne Warren (H)
Luke Humphries v Justin Pipe (D)
Ryan Searle v Adam Gawlas (B)
Glen Durrant v Damon Heta (F)
Gary Anderson v Simon Whitlock (B)
James Wade v Jermaine Wattimena (F)
Rob Cross v Dave Chisnall (D)
Nathan Aspinall v Dimitri Van den Bergh (H)
Evening Session (1900 GMT)
8x Group matches
Schedule of play TBC