Donnie Murphy went 2-for-4 with his seventh home run against the Nationals on Tuesday. Another day, another Donnie Murphy home run. He's now got seven in 48 at-bats, producing a robust and wildly unsustainable .333/.396/.854 line since being called up. We keep waiting for the other shoe to drop -- and it will drop -- but in the meantime, the 30-year-old is getting hard to ignore in mixed leagues.

Donnie Murphy hit a pair of solo homers Monday against the Nationals. That's six homers in 44 at-bats for the red-hot Murphy. He's always had decent pop -- he had 18 homers in 577 major league at-bats entering the season -- but this is getting ridiculous now. He'll remain the Cubs' third baseman until he cools off. He really shouldn't have any lasting value in mixed leagues.

Donnie Murphy stayed hot Friday, going 2-for-2 with an RBI and a walk against the Cardinals. Murphy is hitting .333 with four homers, three doubles and nine RBI in 33 at-bats since his callup. The Cubs will keep using him until he slows down. It should happen before much longer, though.

Donnie Murphy went 3-for-3 with two home runs and four RBI in the Cubs' 5-2 win over the Phillies on Wednesday. Murphy has certainly come out of the gate swinging. Since being recalled on August 3, Murphy is 4-for-9 with three home runs and seven RBI. He's got an extensive track record of performing well below his current level of production, so he's heading toward a cliff in the near future. But it's worth riding him while he's hot in NL-only leagues.

Cubs purchased the contract of INF Donnie Murphy from Triple-A Iowa. Murphy is taking Julio Borbon's roster spot, who was designated for assignment Friday. The 29-year-old batted .265/.338/.457 at the Triple-A level and will provide infield depth.

Cubs signed INF Donnie Murphy to a minor league contract. Murphy will report to Triple-A Iowa. The 29-year-old batted .219/.281/.379 with three home runs and a .661 OPS in 129 plate appearances with the Marlins last season and will serve as organizational depth.

Brewers released INF Donnie Murphy. Murphy exercised the out-clause in his minor league contract after being told that he wouldn't make the team. The 30-year-old batted .239 (11-for-46) with two home runs, four doubles and six RBI in 24 games this spring.

Brewers signed INF Donnie Murphy to a minor league contract. The deal also includes an invitation to spring training, where he'll compete for a utility job. Murphy batted just .216/.281/.379 over 52 games in 2012 for the Marlins.

Donnie Murphy has elected free agency. Murphy was outrighted off the Marlins' 40-man roster earlier this week but has decided to look for a job elsewhere rather than accept a minor league assignment. The 29-year-old batted just .216/.281/.379 over 52 games in 2012.

Marlins sent INF Donnie Murphy outright to Triple-A New Orleans. The Marlins cleared a couple spots on their 40-man roster Wednesday, as they anticipate adding a couple prospects in advance of December's Rule 5 Draft. Murphy, 29, batted .219/.281/.379 with three home runs and a .661 OPS in 129 plate appearances with the Fish this year.