It's been that kind of season for the Rangers, who have dealt with key injuries and lost close games. Moreland was the latest to be victimized, losing out on his first career grand slam.
"He about lost his mind," said manager Ron Washington.
Washington has been talking about the black cloud hanging over the Rangers this season, but one literally rained on their parade.
"Another one appeared," Washington said. "This game tests you, and we've been tested. We're about ready to pass some tests."
The game was delayed for 2 hours, 14 minutes before crew chief Gerry David decided to call it. There was a forecast for heavy rain for the next few hours, so the game was postponed at 4:35 p.m. It was the first rainout in Arlington since Sept. 11, 2009, against Seattle.
Washington said he was satisfied the umpiring crew did all it could do.
"No doubt," he said.
The game will be made up and replayed in its entirety on a date to be determined. Oakland returns from June 9-11, the last series before the All-Star break. Both teams have an off-day on June 8. The A's also come back from Sept. 9-11.
The Rangers entered Wednesday with a 19-18 record, just like the A's, and looking to build off Tuesday's 7-2 victory.
Harrison had allowed 10 runs in the first inning in his previous three starts. And he put himself into a jam again in the top of the first with two walks. But with one out, he got a fielder's choice from Josh Willingham and a groundout by Kurt Suzuki.
The Rangers erupted for seven runs in the third, an inning that unluckily ended up taking too long.
Andres Blanco, playing shortstop with Elvis Andrus getting the day off, gave the Rangers a 1-0 lead with a double into the right-field corner. After Ian Kinsler walked to load the bases, Michael Young got a free pass for a 2-0 lead.
That set the stage for Moreland, batting fifth for the second consecutive game. Moreland had two hits in that spot on Tuesday. He outdid that with one swing, crushing an 0-1 breaking ball into the right-field seats for a six-run lead.
"I barreled it up," Moreland said. "It's not fun [to lose the grand slam], but at the same time, that's part of it. You can't control the weather and what happens."
Moreland took some satisfaction that the Rangers may have turned a corner in the past two days.
"We're definitely getting better," Moreland said. "We're getting back to our style of play. We're scoring runs early. We're feeling confidence as a team."
Fans holding tickets for Wednesday's game can exchange them for any home game the rest of the season, subject to availability.
Todd Wills is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.