Elks' starter Chandler Harmon tried in vain to make it a successful finish, trailing 4-1 and giving up zero earned runs through five inning before A-Plus put up a three-spot in the six to take a 7-1 lead and then the floodgates opened in the seventh when the body shop boys poured it on with eight unearned runs for the 14-run win.
The southpaw hurler gave up just three hits in the contest, while striking out seven and walking five Elks' batters.
A-Plus scored twice in the top of the first after a two-out error by the Elks kept the inning going as Dallas Wright and Sullivan had RBI base knocks after the Elks' miscue.
In the bottom of the second inning, an RBI single by Elks' right fielder Jamie Crowell cut the A-Plus lead in half.
In the top of the third, Logan Bailey and Dunn Crowder walked to start the inning and a passed ball moved both runners up one bag.
Bailey scored on a throwing error on the play, but Harmon retired the next two batters on a strikeout and a pop-up to Wilson Limbaugh at shortstop.
Brooks Leftwich followed with a base hit to left that scored Crowder before Harmon got out of the jam, trailing 4-1.
That was the way the score remained until the top of the sixth when A-Plus tacked on three runs with the big blow coming off the bat of Dylan Rucker, who drilled a bases-loaded hit to right field with two outs.
Sullivan set down the Elks 1-2-3 in the bottom of the sixth, and in the seventh A-Plus busted the game open as they sent 14 batters to the plate and scored eight times.
Wright and Rucker had two RBIs in the inning and Bryce Wunderlin and Zach Smith managed one-run base knocks, while Bailey drove in a runner on a bases-loaded base on balls for the final run.
Ben Taylor, Harmon, and Crowell had the only hits for the Elks in the contest, while Iendi Biggers walked three times off of Sullivan.
Sullivan went 3-5 for A-Plus and scored twice and drove in one run. Wright had two hits in five trips to the plate, drove home four of his teammates and scored once and Rucker knocked in four as he had two hits and a walk in four plate appearances.
Leftwich (one RBI, one run, one BB), Ethan Evans (one hit and two runs scored), Wunderlin (one hit, one RBI, one walk), Smith (one hit, one RBI, one walk), and Bailey (three walks, one RBI, one run scored) rounded out the 11-hit attack for A-Plus, who finished the season with a 7-5 record.