Denny Lucas, a former amateur teammate of Lee Westwood, is a European Tour Professional turned golf instructor.  He joins "On the Mark" to share lessons he learned as a competitor and his philosophies on the golf swing. Denny also talks about his work with 2018 US Amateur Champion Viktor Hovland (Oklahoma State) and what you can learn from Viktor's approach to golf.  He also shares a number of drills you can employ to direct your practice and improve your golf swing.