Trainers & Staff

Lyndsey Simmons

Phone: (631) 921-9290

Lyndsey Simmons is a recently retired professional baseball player from the New York Mets organization. He has also played for the Montreal Expos and the Washington Nationals. Lyndsey signed his first professional contract after finishing a successful season at Oklahoma State University, where he was a leader in the BIG XII conference in many statistical categories.

Lyndsey has grown up in an athletic family. Both of his uncles have played professional baseball. Brian Harper (uncle) has two World Series rings and was a Major League All Star. He is now the current catching coordinator for the San Fransisco Giants. Lyndsey’s cousins are also current professional baseball players. One of them (Brett Harper) was Lyndsey’s teammate on the New York Mets. The other (Grant Harper) is a former Anaheim Angel. Lyndsey also has two sisters who play a high level of tennis. Lauren Simmons was an All-American at Oklahoma State University.

Lyndsey’s goal for Redline Athletics is to help serious athletes reach their goals, and to use his platform to teach young people character and maturity. He enjoys showing his clients the correct paths to a successful experience in athletics.

Lyndsey is married to Ashley and has two children, Corbyn and Macyn.

Erik S. Korop, CSCS

Phone: (541) 912-7170

Erik is a former Strength and Conditioning Coach for the New York Mets. He has worked along side many of the current and up and coming stars in the New York Mets organization. His duties include rehabilitation and speed, strength, and core development.

Erik is a Certified Strength and Conditioning Specialist (CSCS) through the National Strength and Conditioning Association (NSCA). He has also worked at various collegiate programs which include: Baylor University, Oregon State University, University of Oregon, and Western Oregon University. His experience in training includes sports such as baseball, softball, volleyball, basketball, and cheerleading.

Erik earned a Bachelor of Science Degree in Exercise and Movement Science from the University of Oregon. While attending the University of Oregon, he studied strength and conditioning under Head Strength Coach Jim Radcliffe, who is a leader in his field. Erik played college baseball at Lane Community College (Eugene, OR) and Rockford College (Rockford, IL).

Erik currently resides in the Orange County area.

Dan Cummins

Dan Cummins is the head of the Baseball/Softball Department at Redline. Dan played 5 years as a catcher with the New York Mets organization. He played his first Big League game in Spring Training catching future Hall of Famers, Tom Glavine and Billy Wagner. During Dan’s career with the Mets, he played for Hall of Fame catcher and New York Mets great, Gary Carter.

What propelled Dan into his professional career was being named a two-time All-American at the collegiate level, and also being the recipient of the prestigious Johnny Bench Award at the NBC World Series.

Dan’s knowledge of baseball, love for the game, and desire to give back to the next generation of athletes had given him the opportunity to be the hitting coach for the Fullerton Flyers professional baseball team. Thank the Lord he turned it down and decided to keep his talents at Redline Athletics!

Mike Elkerson

Following his senior season of college baseball at Abilene Christian University (TX), Mike Elkerson signed with the Atlanta Braves baseball organization as a corner outfielder.  While on scholarship at Abilene Christian, he earned First-Team All-American Honors and was voted the #1 hitter in Division II baseball by statstud.com.  He finished his senior season leading his team in four hitting categories; hits, RBI’s, HR, and total bases.

Mike is now pursuing his bachelors degree in kinesiology and the study of health promotion at the University of California, Fullerton.  Michael resides in San Clemente, where he grew up and graduated from San Clemente High School in 2003.

Michael is now happily married to Lauren as of November 7th 2010.

Zac Johnston

Phone: 949- 689-5422
Send Zac a message – zjohnston31@gmail
Find Zac on Facebook

Zac Johnston returns to Redline where he trained during his collegiate baseball career. Having a lifetime of team sports experience, he utilizes his history of winning and leadership to train teams and large groups. He began this career at Saddleback College and became the most highly recruited junior college left-handed pitcher in the country. Zac chose to sign with San Diego State, where Tony Gwynn is the head coach. Zac brings excellent knowledge of weight training and pitching instruction to Redline. He believes in setting a solid foundation of functional training and pitching mechanics. This, he finds, allows developing ballplayers to reach their full potential. Zac also believes being a better athlete always contributes to personal achievement and success on the field. Zac has a lot of energy and enthusiasm to his training sessions and wants to help his clients reach their goals.

Rosalinda Masler

Rosalinda is a former professional volleyball player and a certified personal trainer. This Hawaii native was a dual sport standout at Mesa State in Colorado. At Mesa State, Rosalinda was known for being a power-swinging right-side hitter in volleyball and an ultra hustling rebounding machine in basketball. She was selected Rocky Mountain All-Conference in both sports while earning her B.A. Degree in Communications. After graduating in 2005, Rosalinda had her sights set on becoming a professional beach volleyball player and moved to the mecca of volleyball, Southern California, to pursue her dream.

As a Pro on the beach, Rosalinda has competed domestically and internationally. She represented the USA in the World University Beach Championships in 2006. She then went on to earn top ten finishes in several major pro beach volleyball events such as the 2007 Beijing Olympic test event FIVB Challenger, the NORCECA Tour,Guatemala and a beach volleyball event in Ireland. While on the AVP tour Rosalinda was earning 13th place finishes and competing for the top ten spot. In 2010, she was selected as one of the AVP Tour’s Paul Mitchell Hot Shot nominee. When the AVP tour folded during the 2010 season, Rosalinda decided to continue on the path of athletics but now on other side- training and coaching others. She truly enjoys helping young athletes develop and achieve their goals.

Nick Tintle

Aulton Kohn Jr.

Aulton Kohn Jr. is a graduate from Syracuse University. At Syracuse University, Aulton was a highly regarded sprinter. During his tenure at Syracuse University, he achieved great success. Aulton was a 4-year Captain for the team, won 5 Big East Conference Championships, was a 10-time All-Big East Conference Selection, qualified for the 2008 USA Olympic Trials for the 100 and 200 meters, appeared on ESPN twice running in the prestigious Milrose Games and appeared in Sports Illustrated “Faces in the Crowd” section. Aulton has spent time training athletes in a variety of sports (i.e. tennis, soccer, basketball, football, golf, lacrosse, field hockey, softball, etc) looking to improve on their natural athletic abilities. During his time at Syracuse University, he studied under Ryan Cabiles, who is the Head Strength Coach for the Syracuse Men’s Basketball program. Aulton graduated from Syracuse University with a B.S. in Marketing and Finance along with a M.S. in Information Management.