Is Ryan Rolison a buy or sell for fantasy baseball?

Sell High — surface results exceed what the underlying metrics support; sell into the hype.

What is Ryan Rolison's rest-of-season outlook?

2.84 ERA hides a 4.21 xERA — 1.37-run mirage.

week 25

this weekSELL-HIGH

last weekNO CALL

Ryan Rolison

CHC·P

data as of September 11, 2026·week 25

new call as of September 11, 2026

Sell High luck-free xERA 4.21 is 1.37 above the ERA, regression coming — BABIP-against 0.274 suppressed and unstable, flattering the ERA; sell into the hype before regression.high 0.95

ROSK 3ERA 4.03WHIP 1.37W 0–1SV 0

Rolison is a sell-high — the surface is better than the skill.

Rolison has the underlying numbers of a league-average arm, but his ERA is sitting 1.37 runs lower. The gap is his BABIP-against of .274, well below the .295 league average, and that gap is luck — BABIP-against needs around 800 balls in play to be reliable and he has 153. His expected ERA of 4.21 is essentially league average and the metric is stepping up across the sample, so the contact he is allowing is not improving. He strikes out 22.3%, right at league, and his swinging-strike rate of 9.1% is below the 11.0% mark, with his chase rate also under the 28.5% league figure. His walk rate of 10.9% is well above league, and there is nothing in the profile to offset that. The ERA is real in the record; the xERA is real going forward. Sell high. A 4.03 ERA and 1.37 WHIP over 3 K is a drop-tier drag — sell the trade window before regression makes it waiver-only.

VS His Norm

Strikeout %22.3%—+7.1% ▲vs his ~15.2% career norm
Walk %10.9%—−0.2% ▼vs his ~11.1% career norm

Drivers

babip_againstNOISEBABIP-against 0.274 suppressed and unstable — flattering the ERA
xeraSIGNALluck-free xERA 4.21 is 1.37 above the ERA — regression coming

metric · nowrolling trajectoryvs. leaguestabilized?

Hard-Hit % Allowed41.1%

lg avg 40.0% ▲+1.1%vs his norm —

153 / 50 BBE

Barrel % Allowed7.2%

lg avg 8.0% ▼−0.8%vs his norm —

153 / 60 BBE

xwOBA Allowed.316

lg avg .315 ▲+.001vs his norm —

229 / 200 TBF

xERA4.21

lg avg 4.10 ▲+0.11vs his norm —

229 / 200 TBF

ERA2.84

lg avg 4.10 ▼−1.26vs his norm —ERA is below the ~4.10 league average — expect it to rise.

57 / 200 IP

Strikeout %22.3%

lg avg 22.0% ▲+0.3%vs his norm +7.1% ▲

229 / 70 TBF

Walk %10.9%

lg avg 8.0% ▲+2.9%vs his norm −0.2% ▼

229 / 170 TBF

BABIP Against.274

lg avg .295 ▼−.021vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.

153 / 800 BIP

Swinging-Strike %9.1%

lg avg 11.0% ▼−1.9%vs his norm —

229 / 60 TBF

Chase %25.7%

lg avg 28.5% ▼−2.8%vs his norm —

229 / 60 TBF

Fastball Velo94.7 mph

lg avg 94.0 mph ▲+0.7 mphvs his norm —

883 / 50 PITCHES

5×5 ROS Outlook

rest of season

Where each category goes the rest of the way, and the skill that drives it. Tap a row to expand the full derivation.

statytdrosdriverconf

K% 22.3%→19.0%signal3 K — K% 22.3% (signal) tempered to career ~15.2% → projected 19.0% over ~5 remaining IP.

xERA 4.21signal4.03 ERA — xERA 4.21 (signal) blended 65% skill / 35% league 3.70 at 19 IP.

BB% 10.9% + contactsignal1.37 WHIP — a 11% walk rate plus BABIP-against 0.291 gives a 1.44 skill WHIP, blended 6…

run support + role0-1 W — wins ride run support and how deep he goes, not just skill.

role (middle)0 SV — role: middle, not in the save mix.

rosterdrop4.03 ERA, 1.37 WHIP

Every projection traces to a sabermetric input. The driver and confidence shown per row are always visible; tap any row to expand the full derivation.

VS His Norm

Drivers

5×5 ROS Outlook

Comparisons