Do not ask why your thread was deleted by making a brand new thread, especially in NSB. You have three options before thinking of making a "Why?" thread in NSB: 1. Brush up on the stickied rules at the very top of the NSB forum section, it has every rule you need to know about NSB. 2. Directly ask an admin why/what happened on his page or private message. 3. I lied, there is not a third thing you can do. Follow either numbers 1 or 2 and you'll be gucci.
One of the mods likely deleted because you're supposed to post any Mayweather/Pacquiao related material in the master thread at the top.
It's not personal, it's just that the forum would be covered in May-Pac threads.