Robert Williams has the skills to be the Celtics center of the future, but can he stay healthy enough to do the job? John Karalis is joined by Chris Forsberg of NBC Sports Boston to discuss how concerned we are about Williams' injury history, the amazing strides he's made to become so important, and whether now is the right time to try to lock him up with an extension. - Support Us By Supporting Our Sponsors! - Built Bar - Built Bar is a protein bar that tastes like a candy bar. Go to builtbar.com and use promo code “LOCKED15” and you’ll get 15% off your next order. - BetOnline AG - There is only 1 place that has you covered and 1 place we trust. Betonline.ag! Sign up today for a free account at betonline.ag and use that promocode: LOCKEDON for your 50% welcome bonus. - Rock Auto - Amazing selection. Reliably low prices. All the parts your car will ever need. Visit RockAuto.com and tell them Locked On sent you. - Indeed - Get started RIGHT NOW with a FREE SEVENTY-FIVE DOLLAR SPONSORED JOB CREDIT to upgrade your job post at Indeed.com/locked - Lucy.co - Go to Lucy.co and use Promo Code LOCKEDONNBA to get 20% off all products on your first order, including gum or lozenges! - StatHero - StatHero, the FIRST Ever Daily Fantasy Sportsbook that gives the PLAYER the ADVANTAGE. Go to StatHero.com/LockedOn for 300% back on your first play. - Learn more about your ad choices. Visit podcastchoices.com/adchoices