State v. Abbott, 362 P.3d 1171

Defendant was convicted of first-degree theft and challenged convictions for first-degree robbery, unlawful use of a weapon (UUW), menacing, and second-degree robbery.
The charges rested on allegations that defendant stole a bag containing cash, jewelry, and gold and used or threatened force to keep the property.
Defendant testified at trial presenting an alternative version of events, including that he took items from the bag but did so nonchalantly and without intent to threaten with a weapon.
Witnesses described a pursuit and confrontation: Pool pursued defendant, Bustamante restrained him, and Knepell observed the struggle and called 9-1-1.
Officer Brennan discovered cash wedged between defendant’s buttocks and later relayed details to other officers; Reynolds and other officers collected statements inconsistent with defendant’s version.
The jury found defendant guilty on all charges and the court merged UUW and menacing with the first-degree robbery verdict, with defendant’s cross-examination on credibility at issue on appeal.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether cross-examination asking if other witnesses lied violated Isom	State argues it does not constitute improper vouching; issues preserved	Isom prohibits a witness commenting on credibility of another; cross-examination was impermissible	Preserved error; harmless in light of other evidence and closing argument analysis
Whether unpreserved assignments are reviewable; plain error review	Corkill plain-error not available for unpreserved claims	Unpreserved issues merit review due to trial court errors	Unpreserved claims rejected under Corkill; Isom error analyzed for preserved issue; remaining claims deemed harmless
Whether the prosecutor’s cross-examination affected the verdict	Error was harmless given stark witness-credibility conflicts	Error could have swayed jurors against defendant	Harmless error; no likelihood the verdict was affected

State v. Isom, 306 Or 587 (1988) (witness may not comment on another’s credibility; cross-examining on who lied is improper)
State v. Corkill, 262 Or App 543 (2014) (unpreserved claims; whether trial court should intervene sua sponte; vouching concerns)
State v. Southard, 347 Or 127 (2009) (true vouching risk; jury credibility independent)
State v. Milbradt, 305 Or 621 (1988) (limits on expert testimony regarding credibility)
State v. Middleton, 294 Or 427 (1983) (experts commenting on witness truthfulness; prohibition on credibility opinions)
State v. Davis, 336 Or 19 (2003) (harmless error standard for trial-court errors)
State v. Perkins, 221 Or App 136 (2008) (contextual factors in harmless-error analysis)
Riverview Condo. Assn. v. Cypress Ventures, (A150586) 266 Or App 574 (2014) (illustrative discussion on following or declining dictum)