DraftKings, the Boston-based daily fantasy juggernaut, offered details on its stunning financial growth in 2014. In an ongoing battle with rival FanDuel for supremacy of the growing daily fantasy market, DraftKings is beginning to slowly close the gap.

According to details from DraftKings, they went from processing $45 million in entry fees in 2013 to over $304 million in 2014. On top of that, the company’s revenue increased exponentially, surging from $4 million to $30 million.

New York-based FanDuel remains the heavyweight in daily fantasy. Internally, DraftKings estimates the New York company has seized two thirds of the market for daily fantasy sports, say sources close to DraftKings. It seems the Boston challenger is looking to apply some pressure on the incumbent, putting out these numbers.

DraftKings raised $41 million in August, backed by Redpoint Ventures, GGV Capital, and Atlas Venture, with a new contribution from The Raine Group as well. That Series C round followed a $25 million Series B the previous November.

From DraftKings’ side, the cash fuels an arms race so far focused on signing team partnerships–like one they announced in December with the Boston Celtics. In basketball, FanDuel has the bigger hold, having inked a deal with the NBA. But DraftKings is making inroads on the local level.

Ongoing coverage of DraftKings here.

Galen Moore contributed to this report.