The best major to pursue is the one that you will enjoy the most and succeed in as well as best allow you to pursue your varsity sport. Certainly, related majors such as art or environmental studies might be considered the best but if either creates a challenge to succeed or pursue your sport, it may not be the best choice.
Certainly, if your intentions are to pursue architecture at the graduate level, you will want to take courses in art or related disciplines so you have materials for your portfolio. Also, consider the graduate programs to which you might apply to see their requirements - calculus or architecture history.
Decisions on admission to graduate programs are not based on the major, but rather your academic record and portfolio.