Wagoner swept a Verdigris Valley Conference double-header from Miami Saturday at Joe Pollock Field.
The Bulldogs claimed a 5-1 victory in the opener, then used a double play to blunt a seventh-inning rally by MHS to claim a 3-2 eight-inning decision.
"We're snakebit," Miami coach Chris Mercer said. "We're pitching well. We're just not swinging the bats well and we're making crucial errors. We're trying everything and anything."
The two losses, coupled with a 2-0 loss at Hilldale on Friday dropped the Wardogs to 2-5 on the season.
Weather permitting, they're scheduled to host Vinita in a 4:30 p.m. conference clash.
Spencer Neal led off the bottom of the eighth in the nightcap with a base hit, then Tyler Perry and Cole Young followed with base hits to load the bases.
After a strikeout by Cade Johnson, the game ended with Perry then Young being doubled up when Ty Mercer hit a screamer to second.
"You end the game on a sharp-hit line drive and you think 'man, we're snakebit,'" Mercer said. "That is how we've lost our last three games: just little bitty things coming back to haunt us."
The Wardogs had grabbed a 2-0 lead in the bottom of the first on singes by Richard Bearskin and Matt Walker.
However, Wagoner tied the game in the top of the third on a two-run single by Dylan Cantrell.
Each team threatened in the seventh. Miami had the winning run cut down at home, then left the winning tally stranded at third.
A double by Justin Ferrell drove in Dillon Robertson with what turned out to be the game winner for the Bulldogs in the top of the eighth.
Matt Walker collected three singles for MHS, with Richard Bearskin, A.J. Gambill, Neal, Perry, Young and Sam Neal all adding singles.
Nick Allen suffered the loss. He had relieved Walker in the eighth.
In the opener, Wagoner grabbed a 1-0 lead off Gambill in the first, then generated four unearned runs in the second inning.
Miami's only run came in the fourth on a leadoff walk by Spencer Neal and a double by Bearskin.
The Wardogs left runners at first and second in the fifth and had runners at first in the final two frames, but came up empty.
Perry went 4-for-4 while Young had a double and single for Miami. Bearskin doubled and Walker added a single.