appeal and not merely a challenge to the length of the sentence, but failed to raise the same basis in the district court. See United States v. Stall, 581 F.3d 276, 283 (6th Cir.2009) (citing United States v. Vonner, 516 F.3d 382, 391-92 (6th Cir.2008) (en banc)); United States v. Whitelaw, 580 F.3d 256, 259-60 (5th Cir.2009) (citing United States v. Peltier, 505 F.3d 389, 390-92 (5th Cir.2007)); United States v. Lopez-Flores, 444 F.3d 1218, 1220-21 (10th Cir.2006).
In particular, the Fifth Circuit has noted that presenting “a specific legal error distinguishes [a] case from those that have held that the defendant need not specifically object that a sentence is ‘unreasonable’ to preserve a reasonableness objection on appeal.” United States v. Hernandez-Martinez, 485 F.3d 270, 272 n. 1 (5th Cir.2007). Thus, where a defendant raised the “specific legal error” that the sentencing judge “considered an inappropriate factor” in deciding what sentence to impose, the court reviewed only for plain error because the defendant failed to raise the objection below. Id. at 272. Similarly, the Tenth Circuit has noted the difference between challenging the reasonableness of the length of the sentence generally and challenging the method of getting there, and concluded that plain error review is appropriate in the latter circumstance, where “the usual reasons for requiring a contemporaneous objection apply.” Lopez-Flores, 444 F.3d at 1221.
Here, rather than simply challenging the substantive reasonableness of his sentence due to its length or non-specific considerations, Hargrove raises a specific allegation of error — that the district court considered the improper factor of exercising his right to trial — during the sentencing hearing. This claim of error was not addressed at all in Hargrove’s earlier arguments in favor of a below-Guidelines sentence. It was an alleged error that arose during the court’s statements explaining the basis for the sentence it imposed. Hargrove failed to object to it at the time, thus denying the district court the opportunity to consider Hargrove’s argument and correct the purported error. Hargrove raises this specific issue for the first time on appeal. Under these circumstances, we conclude that it is appropriate to apply the general principle established in Federal Rule of Criminal Procedure 52(b), that in the absence of proper preservation, plain-error review applies. See Fed.R.Crim.P. 52(b) (“A plain error that affects substantial rights may be considered even though it was not brought to the [district] court’s attention.”). Accordingly, we review Hargrove’s argument for plain error.
To establish plain error, Hargrove must show (1) that the trial court erred, (2) that the error is clear and obvious, and (3) that the error affected his substantial rights. See United States v. Olano, 507 U.S. 725, 732-34, 113 S.Ct. 1770, 123 L.Ed.2d 508 (1993). Even when this burden is met, we have discretion whether to recognize the error, and should not do so unless the error “seriously affects the fairness, integrity or public reputation of judicial proceedings.” Id. at 736, 113 S.Ct. 1770 (quotation marks and alterations omitted).
Assuming, without deciding, that the first two requirements are met, we nonetheless conclude that Hargrove has not satisfied the third requirement of showing that the district court’s reference to the victim testifying at trial affected Hargrove’s substantial rights. An error affects a defendant’s substantial rights if the error “affected the outcome of the district court proceedings.” Olano, 507 U.S. at 734, 113 S.Ct. 1770. “To satisfy this requirement in the sentencing context, the defendant must show that he would have received a lower sentence had the