The Tour seems much more about trying to catch potential before it is obvious and that's the way to play here this week. Whilst the likes of Thomas Pieters (huge drop in class) and two-time winner this year Nachos Elvira have obvious claims, neither can seriously be baked at a best of 11-1 and 14-1 respectively.

Instead look to the likes of Jack Harrison and Toby Tree to push on after promising starts at this level. 

24-year-old Harrison has progressed with multiple wins on the amateur and lower grade circuits whilst improving his game on the MENA Tour and the less publicised events of the Sunshine Tour, before trying to gain cards on the Asia and Sunshine tours. His father, Phil, was the first ever client of Chubby Chandler, so we know he is in good hands, and he has taken his game up a notch this year at this level.

His rookie season saw him record three top-30s from just six starts, and whilst he has played just four events this year at this level, the early promise of the outing at Kenya was furthered with an excellent 13th place last week at the Swiss Challenge when a closing 67 was enough to come through the field from outside the top-30.  

Many young players talk of the huge difference in their lives when reaching this level, whether it be worrying about the expense of the week's hotel bill or the sheer upgrade of the quality of course, and it takes many time to adjust. I just felt that here was a player of immense promise who may be getting to terms with the Challenge Tour, and in a weakish field was well worth the bet at the prices.

Toby Tree is very much expected to progress into a top-class player and, after an impressive boys career, made the final of the 2014 European Tour Q-school after finishing 15th and 2nd at the first two stages. Two invites at Qatar and Tshwane make impressive reading for one so inexperienced as, whilst he missed the cut at Qatar, the second-round 71 matched and beat many highly-ranked players whilst two impressive rounds (of 63 and 69) resulted in a 53rd place in South Africa. Given that 63 was his fourth ever round on the European Tour, here was clearly somebody to watch over the next couple of seasons. That promise seems to be bearing fruit now and following a missed-cut in Turkey (72/73, hardly poor play) recent efforts have been very eye-catching.

Top-30 at the very difficult and trying Made In Denmark (69 third round) has been followed by last week's top-20 in Switzerland and yet another player to launch through the pack on final day, shooting 5-under 66 when only a final-hole bogey spoilt the card. Although having just turned 21-years of age, Tree is clearly ahead of the game at this stage and needs to keep being backed at three-figure prices whilst showing this promise.

Northern Irishman Gareth Shaw looked to be a play at 80-1 given his consistency but he may not have the latent ability of the selections, whilst Dylan Fritelli is a real threat if recent promise signifies a return to his 2013 form after a year in the wilderness. 

One of the highest-rated youngsters from South Africa, Thriston Lawrence, gives a truly positive interview to the Challenge Tour website but he hasn't shown enough even at 250-1, but when a betting colleague mentioned Edouard Dubois, I thought he would be looking at around 33-1, so the 50-1 needs taking for a few shekels.

The 26-year-old Frenchman came through the Alps Tour before making his debut on the Challenge Tour in 2010 and has cemented his place in the top twenty or so whilst trying to keep his main Tour card in both 2012 and 2014. Winner of two decent events at this level in 2011, recent form is respectable enough with seven top-10s in 2013 including at the finale in Dubai, whilst on the European Tour last year he made the cut in ten events.