So high, in fact, that all single-game tickets for those four games sold out during the first four hours the tickets went on sale.
However, fans still wishing to purchase tickets to any of those four games can still do so by ordering one of the Pirates' multi-game ticket packages.
The easiest way to secure a ticket to one of the three Yankees games is by purchasing an eight-game ticket package. For every eight-game package that is purchased, you will be able to buy one ticket to one of the three Yankees games. In addition, purchasing an eight-game package will also give you the opportunity to purchase a ticket to the April 7 home opener.
Each eight-game package also includes two free tickets to two additional weekday games.
Fans hoping to secure tickets to two of the three games against the Yankees can do so by purchasing one of the team's 20-game partial season ticket plans. And of course, full-season ticket packages are also still available.
Overall, ticket sales during the initial four-hour period on Saturday increased by 15 percent from the same time period a year ago. The specific number of tickets sold, however, was not released by the team.
Much of the early ticket demand can be attributed to the scheduled series against the Yankees, who are making their first trip back to Pittsburgh since Pirates Hall of Famer Bill Mazeroski clinched a World Series championship for Pittsburgh in 1960 with his ninth-inning home run.
Since then, the Pirates have played the Yankees twice in Interleague Play, but both series were played at Yankee Stadium.
We understand that much of the excitement has to do with the Pirates taking on the Yankees when they come to town for Interleague Play," said Brian Warecki, the Pirates' senior director of communications. "But last year was a very good [initial] on-sale day, so to still maintain that, even with the Yankees series, is still impressive. It speaks to the passion of our fans."
Single-game tickets will continue to be available for purchase here on Pirates.com, by calling 1-800-Buy-Bucs or by stopping by the PNC Park box office.
Jenifer Langosch is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.