While currently preparing to kick off the highly anticipated upcoming "Drake vs. Lil Wayne" joint tour, the YMCMB duo sets a new Billboard record with their most recent collaboration track "Believe Me" off Tunechi's final solo album "Tha Carter V."

The OVO founder previously rapped boastfully in "5AM in Toronto," which was released last year in anticipation of his platinum-selling third studio record "Nothing Was the Same," about scoring more atop the Billboard R&B/Hip-Hop chart than any other artists: "You underestimated greatly / Most number ones ever, how long did it really take me?"

According to Billboard, Drizzy and Weezy now rewrite R&B/Hip-Hop Airplay history, as "Believe Me" rises 2-1. This certainly makes the Toronto emcee's 14th No. 1, dethroning Usher, who scored 13 so far. The New Orleans rapper naturally becomes the third in place with "Believe Me" as his 10th chart-topper. The two rapper's latest collaboration scored No. 1 on the Rap Airplay chart, as well.

The Young Money pair, who have frequently put their rap skills on showcase in the past with a number of notable collaborations, including "No New Friends," "The Language" and "Started from the Bottom," are set to kick off their 31-city summer concerts on Aug. 8 in Darien, New York and will make stops in major cities, including Chicago, Atlanta, San Francisco, Houston, Dallas and Los Angeles.

"Since, thank god we've been so successful, [we'll just be] going back and forth with our hits and getting the crowd to go crazy, then just finally hit the stage together," Wayne told MTV News. "It's battle type thing."

Meanwhile, Drake scored a nomination for Best Hip-Hop Video with "Hold On (We're Going Home)" featuring his protégé Majid Jordan at this year's MTV Video Music Awards, and Lil Wayne is getting ready to release his forthcoming album "Tha Carter V."