Fletcher hit a top score of 69 to help the Falcons produce 187-9 from their 20 overs after being put in to bat by the Marvels.
His knock lasted 43 balls and included six fours and four sixes. He got good support from opening partner Dinesh Chandimal who made 32 while Angelo Mathews and Ramesh Mendis chipped in with 29 and 28, respectively.
Prabath Jayasuriya took 3-30 from his four overs for Galle.
The Marvels then took 19.2 overs to reach 188-2 and secure a comfortable victory.
Alex Hales was the catalyst behind the successful chase with 86* off 55 balls including seven fours and four sixes while Bhanuka Rajapaksa finished 46* off 25 balls including five fours and a pair of sixes.
Captain and wicket-keeper Niroshan Dickwella also chipped in with 25.
Fletcher also took 1-11 from two overs with his part-time leg-spin.
The Marvels are now second in the points table after six games, level on eight points with leaders Jaffna Kings.
The Falcons have two wins from six games and sit last on the six-team table.
Full Scores:
Kandy Falcons 187-9 off 20 overs (Andre Fletcher 69, Dinesh Chandimal 32, Angelo Mathews 29, Ramesh Mendis 28, Prabath Jayasuriya 3-30, Dwayne Pretorius 2-37)
Galle Marvels 188-2 off 19.2 overs (Alex Hales 86*, Bhanuka Rajapaksa 46*, Niroshan Dickwella 25)
Rovman Powell is sure to feel that things are definitely not going his way this season when the Northern Warriors lost by 10 wickets to Chennai Braves on Monday in the Abu Dhabi T10 league.
On a personal level, Powell is having a great season. His 294 runs lead the league and his 26 sixes are second only to Liam Livingstone’s 28, but for all his success, Northern Warriors seem incapable of capitalizing.
The Jamaican all-rounder scored 31 runs on Monday from just 13 balls from which he smashed four sixes in his side’s 108 all out in 9.5 overs. He got support from Upul Tharanga, who scored 32 from 14 and Moeen Ali, who got 25 from 15 but Warriors were never able to get on top of Chennai’s bowling led by Ravi Bopara who took 2-6.
Curtis Campher (2-16) and Dasun Shanaka (2-25) did their part to contain Warriors' batsmen.
Chennai’s batsmen took full advantage of the opportunity racing to 114-0 in just 8.3 overs to record their first win of the season.
Mohammad Shahzad raced to 54 from just 29 balls smashing nine fours and two sixes along the way. His opening partner Bhanuka Rajapaksa needed six fewer balls to score 55 that included six fours and four sixes.
Oshane Thomas’ two overs went for 27 while Rayad Emrit’s nine balls cost the Warriors 20 runs as their team lost their seventh match of the season.
The Amazon Warriors won the toss and opted to bat first and it was a decision that was to backfire as the innings never really got going until the final five overs. Despite some late power hitting the Amazon Warriors could only post 167-5 which appeared subpar at first glance.
That proved to be correct as the Saint Lucia Kings confirmed that by chasing down the 168 to win with 15 balls remaining.
Earlier the Amazon Warriors suffered a slow start as Matthew Nandu was run out for three inside the PowerPlay and that setback contributed to the Warriors only reaching 35-1 at the end of the initial six overs.
That sedate start was difficult for the home side to overcome as the CPL’s top run scorer, Saim Ayub, fell for 16 in the ninth over with the score on 50-2.
However, Shai Hope and Azam Khan then Khan and Shimron Hetmyer helped rebuild the innings before late fireworks from Keemo Paul and Romario Shepherd ensured 72 runs were added in the final five overs to set the Kings 168 to win.
That 168 proved to be well under par as the Kings made easy work of the chase.
Although Johnson Charles fell for one in the second over that was to be as good as it got for the Amazon Warriors as Colin Munro and Bhanuka Rajapaksa put on a devastating partnership of 132 runs from 82 balls.
Rajapaksa holed out for 86 to deep mid-wicket and Munro followed shortly after for 55, but the job was done. It allowed Sean Williams and Sikandar Raza to see the chase home with three overs remaining.
The win ensures the Kings qualify for the playoffs with one game to spare.
Scores: Saint Lucia Kings 170-3 (Rajapaksa 86, Munro 55; Shepherd 1-15, Tahir 1-34) beat Guyana Amazon Warriors 167-5 (Khan 40, Hope 38; Joseph 2-31, Raza 1-14) by seven wickets.