Tyler O'Neill had a game to remember as he drove in all eight runs in Jackson's 8-4 win over Pensacola on Wednesday night. The Mariners' No. 4 prospect went 3-for-4 and capped the evening with a walk-off grand slam.

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The eight RBIs were a career-high for O'Neill, whom the Mariners selected in the third round of the 2013 Draft.
After hitting .240 in the first half last year, O'Neill picked up the pace and hit .286 in the second half for Class-A Advanced Bakersfield. The outfielder then carried that momentum over and has gotten off to a fast start in 2016, despite being bumped up to the Double-A level.
O'Neill is hitting .332 with 11 homers and 51 RBIs in 52 games.
The rest of the best performances from top prospects Wednesday
• Austin Meadows has made up for his slow start in a big way over the past two weeks for Double-A Altoona. The Pirates' No. 2 prospect (No. 16 overall) went 3-for-4 with a homer Wednesday and is in the middle of a 17-game hitting streak, during which he's raised his average from .192 to .302.

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• Twins' No. 3 prospect Tyler Jay's string of dominance continued as the left-hander fired six scoreless innings for Fort Myers. The No. 55 overall prospect gave up seven hits and walked two, but was able to put up a string of zeroes and has pitched 15 consecutive scoreless frames.
• After giving up six runs in his last start, Blue Jays' No. 2 prospect Conner Greene bounced back and gave Dunedin six strong innings. Greene struck out six and gave up one earned run on five hits.
• Indians' No. 8 prospect Francisco Mejia extended his hitting streak to 10 games with a 3-for-5 performance for Lake County. The 20-year-old hit his third homer of the season and drove in four runs, his third four-RBI game of the year.
• Adam Plutko (Indians' No. 15) struck out a season-high 13 as he twirled a gem in his longest start of the season for Akron. Plutko tossed 7 2/3 innings and gave up two earned runs on five hits and a walk. The right-hander has now given up one earned run or fewer in seven of 12 starts this season.

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• Chris Flexen (Mets' No. 26) finally gave up a run. Coming off back-to-back scoreless starts -- a span of 13 1/3 innings -- Flexen gave up one earned run in 5 2/3 innings for St. Lucie. The right-hander allowed just four hits and struck out a season-high nine.
• Reynaldo Lopez (Nationals' No. 5) struck out a season-high 13, but he was stuck with a no-decision for Harrisburg. The 22-year old right-hander gave up two runs in seven innings.

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• While Lopez was putting together a quality start for Harrisburg, Wilmer Difo was getting used to trotting around the bases. The Nationals' No. 6 prospect hit his first two homers of the season as he went 3-for-4 with two homers and a pair of RBIs.
• A pair of Padres' prospects led the way as Fort Wayne topped Bowling Green, 6-2. Michael Gettys (Padres' No. 9) followed up Tuesday's three-hit day with a 4-for-4 performance. Meanwhile, Austin Allen (Padres' No. 24) went 2-for-5 with a double, a homer and four RBIs, a career-high.
• Aristides Aquino (Reds' No. 22) put together his second two-homer game of the season for Daytona as he went 2-for-4 with a pair of RBIs.