You've got to have a goal
Your goal? To be a strong photographer. Your daughter's? Well, better bring your Sigma Photo 70-300mm f/4-5.6 lens to bear quickly — she's running free in the opponent's penalty zone about to score her first competitive soccer goal.
This 4.2X telephoto zoom lens is made for moments like that. Even if you're cheering from the stands, chances are you'll be able to get the shot you want, quickly and accurately. Built-in optical stabilization helps you get clear shots when zoomed in, and Sigma's precision optics see to it that the image will be consistent from edge to edge.
While this lens is optimized for full-frame cameras, it's completely compatible with APS-C size sensors as well. On most APS-C cameras it has an effective focal length of 105-450mm, so you'll have some impressive reach with this lens zoomed all the way in. Maybe both of you have scored a goal.