You will find the log in to your account with Tennis Express Rewards Visa® Credit Card by logging in to their website.
The log in box is in the upper right corner of the site, under Sign in. Click on sign in and if you are already a customer and you need to login to your account, then you are a returning customers, all you need to to do according to following screenshot, is to add your email and and password then click on login now.
But if you are a new customer, then you are requested to enter your email and password according to the following screenshot, which is under new customer register with Tennis Express to use all their convenient site features and then click on create account. So whether logging in or create a new account, they are both available under the Sign in box upper right corner according to the screenshots taken of Tennis Express Rewards Visa® Credit Card.