Use of "al"
In sentences such as, Las mujeres juegan al fútbol why is al in these sentences that I see in my Rosetta Stone course. Doesnt Las mujeres juegan fútbol have the same meaning? Women play fútbol
2 Answers
Both are valid ways. The omission of the "al" is taken from the English but due to the vast use in American Spanish, I believe it has been accepted by the RAE.
I still will always add the "al". It sounds better to me.
This link is similar to your question. using the contraction 'al'