Contact Us St. James Assiniboia Minor Baseball Association Optimist Park 1600 Summit Road Winnipeg, MB Mailing Address SJAMBA 271-3336 Portage Avenue Winnipeg, MB R3K 2H9 Send Us a Message Name Please enter your name. Email Please enter a valid email. Your Message Please enter a message. Please check the captcha to verify you are not a robot. Send Message Sent! Message failed. Please try again.