Side-by-side comparison using independent TWU lab measurements
Aggregated spec scores
Scores calculated from TWU RA, weight, head size and string pattern.
Lab data comparison
Measurements from Tennis Warehouse University (TWU)
RA Stiffness — lower = more flex & comfort
Weight — higher = more stability
Swingweight — higher = more plow-through momentum
Choose the TF40 305 16x19 if…
Control-first players, flat hitters, serve-and-volley
Flexible — arm-friendly (RA 64)
Choose the Blade 98 18x20 v10 if…
Control-first players, flat hitters, serve-and-volley
Very flexible — max comfort (RA 61)
🎵 String strategy for each frame
These are different rackets — they deserve different string setups.
TF40 305 16x19
Balanced stiffness (RA 64). A mid-stiffness co-poly like Babolat RPM Team or Wilson Revolve at 52–56 lbs gives a comfortable all-court setup without sacrificing spin or control.
Blade 98 18x20 v10
Very flexible frame (RA 61) — arm-friendly. Pair with a crisp co-poly like Luxilon ALU Power Rough at 54–58 lbs to add control and prevent the string bed feeling too elastic.
⚖️ Specs Equalizer
Can I make these specs match?
To match the swingweight of the Blade 98 18x20 v10 (SW 325), add 3g of lead tape at the 12 o'clock position on the TF40 305 16x19. This raises its swingweight from 321 to approximately 325 kg·cm².
Still not sure?
Find which fits your specific swing
Our 2-minute quiz maps your swing speed, play style, and priorities to TWU lab data to tell you exactly which of these — or something else — is your best match.
Take the 2-minute quiz →Free · No account needed · Backed by TWU lab data