String comparison
Synthetic Gut with WearGuard vs OG-Sheep Micro
Gamma Synthetic Gut with WearGuard against Gosen OG-Sheep Micro: ratings, specs and which one fits your junior.
The short answer
Both are synthetic gut strings. Synthetic Gut with WearGuard leads on durability and tension hold. They score the same for arm friendliness (4/5).
Ratings
Power
Spin
Control
Comfort
Durability
Tension hold
Ratings are on a 1–10 scale. The higher score is in bold when they differ.
Pick Synthetic Gut with WearGuard if…
- You want more durability (7 vs 6 out of 10)
- You want more tension hold (6 vs 5 out of 10)
- Your player is younger (recommended from age 6 vs 8)
- Best for: beginning and intermediate juniors
- Best for: budget-conscious families
- Best for: players who restring often
Pick OG-Sheep Micro if…
- Best for: budget-conscious players at any level
- Best for: juniors developing their game
- Best for: home stringers and high school teams
Specs side by side
| Spec | Synthetic Gut with WearGuard | OG-Sheep Micro |
|---|---|---|
| Type | Synthetic gut | Synthetic gut |
| Construction | Super Resilient Dynalon solid center core with WearGuard wear-resistant outer wrap, irradiated for elasticity | Solid core synthetic gut with thinner center core than OG Micro Super |
| Gauges | 15L, 16, 17 | 16, 17, 18 |
| Stiffness | Medium | Low |
| Set price | $4–6 | $4–6 |
| Reel price | $82–83 | $50–70 |
| Arm friendliness | 4/5 · Good | 4/5 · Good |
| Cost to maintain | 5/5 | 5/5 |
| Recommended from | Age 6 | Age 8 |
| Levels | Beginner, Intermediate | Beginner, Intermediate, Advanced |
| Play styles | All court, Touch player, Serve and volley | All court, Touch player, Serve and volley |
| Junior tension | 52-58 lbs for juniors, mid-range of the racquet. | 52-58 lbs for juniors. At 56 lbs produces nice "thud" rather than "ping". |
Synthetic Gut with WearGuard in short
Gamma Synthetic Gut with WearGuard is one of the most common budget strings and a Tennis Warehouse best seller. A solid Dynalon core helps it hold tension, and the WearGuard wrap resists notching and reduces friction. Gamma pitches it as an all-around string that balances playability and durability. Buyers report good comfort with average power and control; it lasts well at moderate use but breaks quickly under heavy topspin.
OG-Sheep Micro in short
Born in 1981, Gosen OG-Sheep Micro has stood the test of time as one of the best value strings available. This Japanese synthetic gut offers great all-around playability with no huge deficits preventing the full range of shots. It's slightly softer and more powerful than OG Micro Super due to its thinner center core. Poly players adapting to it found the transition seamless. For the player who simply wants great all-around playability at an almost unbelievably low price, OG-Sheep Micro is as good as it gets.
Synthetic Gut with WearGuard vs OG-Sheep Micro: quick answers
Which has more spin, Synthetic Gut with WearGuard or OG-Sheep Micro?
They tie on our spin rating (5/10 each).
Which is more arm-friendly for a junior?
They score the same, 4/5. Synthetic Gut with WearGuard is recommended from age 6 and OG-Sheep Micro from age 8.
Which lasts longer?
Gamma Synthetic Gut with WearGuard rates 7/10 for durability against 6/10.
Which is cheaper?
Synthetic Gut with WearGuard costs about $4–6 a set and OG-Sheep Micro about $4–6, at typical retail.
The short answer and the "pick if" lists are generated from our ratings and junior data only. Data verified 2026-10 (Synthetic Gut with WearGuard) and 2025-01 (OG-Sheep Micro).