Use your email and get a temporary pass on NBColympics.com.
Although it only lasts 4hrs but I assume you can use a different email after that and it might still work.
myemailaddress@gmail.com
my.emailaddress@gmail.com
myemail.address@gmail.com
The "+ syntax" does not belong to Gmail, nor was Gmail the inventor of same. foo+bar@domain.net is an ancient tradition, dating back almost to the dawn of SMTP. Of course, the interpretation of the local part is entirely up to the MTA handling it, but foo+bar is pretty widespread. Certainly Sendmail supports it.