ESPN or other sports-page Data Program

Hello Rentacoders, I would like some kind of program, or excelsheet- im not quite sure how to do it- where I could have data taken from a web page that I am hosting (which is espn-like data) and then take info from another page, such as [login to view URL] and play around with this data how I like. For example, take a players rebounds and adjust for the team hes playing, perhaps something like if he gets 10 rebounds a game in an average game where 42 reboundsa re the rule, but the team he's playing allows 45 rebounds, then the program would simply automatically do 10 x 45/42 to adjust. Very simple things like this, but they would be done automatically. Most importantly, I'm unsure of what I want off the bat. So this is KEY. I need someone who is responsible and has a good track record here because I want to make modifications as we go, at an agreed price. So want to have an ongoing relationship with someone. Thank you so much!