Red Sox Prospect Watch: Jarren Duran gets well deserved promotion
By Hunter Noll

Full-A (Greenville Drive)
Thad Ward‘s streak of innings without allowing an earned run is up to 26 1/3 innings after going five on June 1. The 22-year-old has a 2.02 ERA now in 62 1/3 innings on the year. He’s struck out 71 in that time and has held opponents to a .189 average while posting a 1.01 WHIP.
Yoan Aybar has a 6.63 ERA and 21 walks in 19 innings. He also has 24 strikeouts and a .157 BAA. Pick which you want to fixate on but it’s hard not to acknowledge that there’s a ton of potential there.
Triston Casas is down to a .254 average but all-in-all he’s killing the ball this year. The 19-year-old has 13 doubles and 10 home runs and an organization leading (including the Majors) 43 RBI. The Red Sox drafted him to hit and he’s doing a whole lot of that.
Alan Marrero is on a current five-game hitting streak. The catcher is hitting .271 (.354 OBP) with seven doubles and four home runs so far. At just 21, he deserves a lot more credit as an intriguing prospect than he gets.
Kole Cottam is right there with Marrero in that category. Another catcher, he’s hitting just .223 with seven doubles and two home runs but has all the tools. Cottam has a lot of potential in his bat and is growing behind the plate.
Tyler Esplin is still 19. It’s easy to look at his season and feel unimpressed but that’s important to remember. Another thing to remember is he’s improving over last year. This is actually a very positive year for Esplin and if you’ve followed him should feel great about his potential.
The outfielder has a career-high 12 doubles to go along with his .227 average. He’s hit two doubles and one home run as well and already has 14 RBI and a career-best 25 runs scored.
Another 19-year-old is Brandon Howlett. He’s hitting .225 with nine doubles and three triples so far. The third baseman has shown a lot of power in his bat that’s just waiting to burst through as he matures. For now, it will be fun to watch his growth.
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Devlin Granberg is hitting .298 with 13 doubles and four triples, as well as three home runs. He’s driven in 19 runs and scored 26 more, stealing five bases in the process. The first baseman does a little bit of everything at the plate and as a sixth-rounder from last year, you’d think he’d get some more recognition – especially with how well he’s playing.